TREK Product - Model 157 Charged-Plate Monitor

TREK Model 157 Charged-Plate Monitor

Trek's Model 157 Charged-Plate Monitor offers greater accuracy, stability and bandwidth than conventional designs. This model combines Trek's patented precision charge measurement capability with features that drive down the cost of ionizer performance testing and maintenance.

Model 157 is suitable for semiconductor, disk drive, LCD and many other manufacturing environments that are sensitive to static charge. It can be used to test all types of ionizers including room ionization systems, AC and DC blowers, nuclear ionizers, gun type ionizers, and pulsed DC ionizers. It is also useful in materials evaluation for testing dissipative qualities and charge decay analysis.

Features include a user-friendly menu system with a clear and easy-to-read digital display, powerful graphics display, manual or bar code reading capability for quick ionizer identification (and storage of associated tests results), the capability of storing hundreds of ionizer tests on board for later download and data analysis, USB port for uploading/downloading test sequences and test results to a computer, optional thermohygrometer to record temp/humidity conditions, and a lightweight static-dissipative enclosure for optimum ease of transport.

Enhanced features now include the ability to store & retrieve data as data points or graphs, the option to record operator comments for future reference, and the addition of a "fast" data acquisition mode (1 ms/data point) for rapidly-changing discharge events, to complement the "normal" mode (10 ms/data point). Static decay graphs can be saved and retrieved.

Technology: Trek's Model 157 employs a revolutionary charged-plate monitor design that utilizes an ultrahigh-impedance, high-voltage follower to monitor the ion collecting plate voltage. This technique provides high accuracy and virtually infinite impedance loading of the plate, while allowing the ion collecting plate to be charged and monitored through the same small-diameter cable connection.
Flexibility: Trek's technology makes the measurement capacitance independent of the physical size and shape of the ion plate. Therefore, the size and shape of an ion collecting plate, as well as the measurement capacitance, may be customized to match a particular ESD-sensitive device within a manufacturing process, or be made to conform to the ANSI ESD STM 3.1 standard test method.
Greater Bandwidth: Trek's technology also provides greater bandwidth enabling "true" responses to be observed, avoiding the masking of results which can occur with other systems.
Balance Tests: The Model 157 resolves 0.1 volts and features high accuracy with extremely low offset and drift, which is ideal for testing ionizers in facilities requiring critical ion balance such as in GMR and TMR manufacturing areas.
Discharge Tests: Start and stop voltages are programmable in 1 volt increments.
Ease of use: The Model 157 incorporates a user-friendly menu system. Frequently used functions are a keystroke away. A powerful graphics display emphasizes important information and provides operator prompts.
Portability: Designed to be small and lightweight, this unit is easily moved within a facility.
Long Battery Life: This model features over 8 hours of battery life for long periods of uninterrupted testing.

Show/Hide Product Technical Information

PERFORMANCE

Monitored Voltage Range
0 to ±1020 V DC or peak AC.

Bandwidth (-3 dB)
DC to 80 Hz.

Zero Stability (referred to plate voltage)
Drift with Time (no incident ion flow)
Less than 6 V/minute.

Drift with Temperature
Less than 10 mV/°C, noncumulative.

Decay Mode Thresholds

Start Voltage
Programmable from 1 to ±1000 V in 1 V increments.
Start Accuracy
Within ±1 V of programmed start voltage.
Stop Voltage
Programmable from 0 to ±999 V in 1 V increments.
Stop Accuracy
Within ±1 V of programmed stop voltage
or ±0.2 V if set for less than or equal to 90 V.

Discharge Timer Resolution
0.1 seconds, from 0.1 to 999.9 seconds.

Plate Self-Discharge (unpolarized)
Less than 12 Volts/minute.

NOW WITH ENHANCED FEATURES

Store & retrieve data as data points or graphs

Record operator comments for reference

"Fast" data acquisition mode now available

Ideal for monitoring static charge in a manufacturing facility

Suitable for dissipative testing of materials

ION COLLECTING PLATAES

Standard Option
Meets ESD Association Standard ANSI/ESD-STM3.1 requirements for:

Dimensions
15.3 cm x 15.3 cm square, (6" x 6" square).
Capacitance
20 pF ±2 pF.

Non-standard Option

Dimensions
Specify when ordering.
Capacitance
Specify when ordering.

High Temperature Ion Collecting Plates

Model 156P-HT 150mm x 150mm Charge Plate

Dimensions
15.3 cm x 15.3 cm square, (6" x 6" square) ion collecting plate
Cable Length
2.7 meters
Capacitance
20 pF ±5 pF
Operating range
-60° to 160°
Relative Humidity
To 85%, noncondensing

Model PD04002AP

Dimensions
25 mm x 25 mm (1" x 1") ion collecting plate
Cable Length
3 meters
Capacitance
20 pF ±5 pF
Operating Range
-60° to 160° C
Relative Humidity
To 85%, noncondensing

Standard Plates (ordered separately) include 15.3 cm x 15.3 cm (6" x 6" square) plate (Model 156AP-C150x150-R3M) and a 25 mm x 25 mm (1" x 1") plate (Model 156P-C25x25-S3M).

Special Plates can be ordered separately. Custom plate sizes are available by special order.

[Low Profile Charge Plate] Model 156P-LP 150mm x 150mm Charge Plate

Trek's Model 156P-LP Low Profile Charged Plate provides a design used for ESD monitoring of sensitive manufacturing processes in tight spacing situations. The thin plate is under 7 mm in height, light-weight and can be hand-held for easy transport.

Dimensions
15.3 cm x 15.3 cm square, (6" x 6" square) ion collecting plate,
plate hieght is under 7 mm H.
Cable Length
2.7 meters
Capacitance
20 pF ±5 pF
Operating range
5° C to 25° C
Relative Humidity
To 70%, noncondensing

DI Water Probe

Trek's Model PM08035 DI [deionized] probes can be used for electrostatic measurement of de-ionized water. Applications include use during critical wafer sawing processes to monitor charge accumulation. These probes can be used with other applications or processes involving de-ionized water.

Two probe models are available for user defined or application specific purposes. The Model PM08035A probe has a 0.25 inch sensor. The Model PM08035B probe has an independent wire sensor. Contact factory for more information.

PRODUCT FEATURES

Menu Selection and Display
Six soft-keys and display prompts navigate the user through system operations. Automated or manual tests can be performed, programmed, or retrieved. Among the functions are:

+DISCHARGE, -DISCHARGE, BALANCE Tests
Sets the plate voltage to a value just above
the programmed start voltage and resets the discharge timer to zero.

BALANCE TEST
Sets the plate voltage to 0 V ±0.5 V.

AUTO (Programmable)
Series of Tests and Parameters Capability to program multiple series of combinations of +DISCHARGE, -DISCHARGE, or ION BALANCE tests.

Memory
Can store or retrieve as many as 1500 manual or up to 1000 automated test results in its internal memory.

TEMP/RH Meter Connector
A connector receives an input from an optional thermohygrometer (Omega Model HH311) and enables the Model 157 to display environmental data on the LCD screen and also save or retrieve the information on test results.

Bar Code Wand Input Connector (available for 157-1 only)
A connector receives an input from an optional bar code wand and enables the Model 157-1 to display bar code identification on the LCD screen and also save or retrieve the information on test results. A maximum of 15 bar code characters are allowed

Data Retrieval and Analysis
Data can be exported from the Model 157 into a PC computer through a USB port for later analysis or record keeping.

Fast Mode (data acquisition)
When connected to a computer, data can
be collected at a rate of 1 ms/data point
(normal rate is 10 ms/data point). This is
useful for evaluating the resistive or
dissipative properties of materials.

Voltage Monitor Output
A BNC providing a low voltage replica of the plate voltage.

Scale
1/200th of the plate voltage.
DC Accuracy
Better than 0.1% of full scale.
Offset Voltage
Less than ±10 mV (referred to plate voltage).
Output Noise
Less than 10 mV rms (measured using the true rms feature of the Hewlett Packard Model 34401A digital multimeter).
Output Impedance
Less than 0.1 Ω.

LCD Display Screen with LED back-light
127 mm x 38 mm (5" x 1.5") screen displays all test data and program options with date and time display.
Resolution
240 x 64 pixels.

Ion Collecting Plate (ordered separately)

Meets ESD Association Standard ANSI/ESD-STM3.1 requirements for:
- Dimensions
  150 mm x 150 mm square (6" x 6" square).
  25 mm x 25 mm square (1" x 1" square).
- Capacitance
  20 pF ±2 pF.
Non-standard Option
- Dimensions
  Specify when ordering.
- Capacitance
  Specify when ordering.

High Temperature Ion Collecting Plates

Model 156P-HT 150mm x 150mm Charge Plate
- Dimensions
  15.3 cm x 15.3 cm square, (6" x 6" square) ion collecting plate
- Cable Length
  2.7 meters
- Capacitance
  20 pF ±5 pF
- Operating range
  -60° to 160°
- Relative Humidity
  To 85%, noncondensing
Model PD04002AP
- Dimensions
  25 mm x 25 mm (1" x 1") ion collecting plate
- Cable Length
  3 meters
- Capacitance
  20 pF ±5 pF
- Operating Range
  -60° to 160° C
- Relative Humidity
  To 85%, noncondensing
Charged Plate Monitor Accessories
DI (de-ionized) Water Probes / Low Profile Charged Plate Information (PDF)

GENERAL

Power Requirements
Available for all nominal line voltages. Contact TREK, INC. or an authorized service organization for more information. The Universal Battery Eliminator/Charger Model 1K010 provides the following input power:

Specifications

Output Connector
2.1 mm DC power plug.
Voltage
15 V DC, ±5%.
Current
2 A.

Battery Operation
Rechargeable battery (internally installed).

Operating Time
Greater than 8 hours from a full charge.
Recharge Time
Less than 3 hours to full charge.
Battery Status Indicator
LCD screen battery status indicator.

Operating Conditions

Temperature
5 °C to 35 °C.
Relative Humidity
To 80%, noncondensing.

Instrument Dimensions
102 mm H x 254 mm W x 241 mm D
(4" H x 10 " W x 9.5 " D).

Instrument Weight
2 kg (4.4 lb).

Voltage Monitor Connector
BNC coaxial connector

Ground Receptacle
Banana jack.

Cable from Instrument to Floating Plate
Coaxial type. Diameter of 4.95 mm (0.195²). Length of 3 meters (10 ft), nominal.

Diameter
4.95 mm (0.195").
Length
3 meters (10 ft), nominal.

USB Port Connector
Standard USB receptacle on Model 157 unit connects to a PC for data exchanges or transfers.

COMPUTER REQUIREMENTS
The Model 157 applications software runs on a PC compatible computer, Pentium class processor or better, Windows 98 or better, 2000, or NT, with 16 Mb of RAM, and an available USB port.

ACCESSORIES SUPPLIED
Operator’s manual for unit, Universal AC Adapter kit (100 to 240 V AC ±10%), PC based computer software, and a 2.7 meter (9 ft.) stackable banana to banana cord, and carrying case.

OPTIONAL ACCESSORIES
Ion Collecting Plate Tripod, Thermohygrometer (Omega Model HH311 and cable), and bar code wand with DB9 connctor.

CERTIFICATION

TREK, INC. certifies that each Model 157 is tested and calibrated to specifications using measurement equipment traceable to the National Institute of Standards and Technology to traceable to consensus standards. A Certificate of Calibration accompanies each instrument when it is shipped from the factory.

Low Voltage Safety Compliance
- Overvoltage Category
  CAT I: Peripheral level outputs (less than 60 volts).
- Pollution Category
  Degree 1: Operate in environments where no
  pollution or only dry, nonconductive pollution occurs.

All specifications are subject to change.

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