MKS 937A High Vacuum Gauge Controller HPS Products 5-Channel Made in USA, Tested

Description

MKS 937A High Vacuum Gauge Controller HPS Products 5-Channel Made in USA, Tested
937A-120V60TR-NACMCM232
Installed Components
Power Supply 120 V AC w/ 15-Pin Accessory Port
AIO Analog Module w/ 25-Pin Connector
CC Cold Cathode Module w/ 4-Pin Remote Connector
Convection Pirani Module, 2-Channels 9-Pin Connectors
THE HPS™ PRODUCTS SERIES 937A Multi-Sensor High Vacuum System uses the technologies of the cold cathode, standard Pirani, convection Pirani, and thermocouple sensors and the capacitance manometer together to measure pressures from as high as 10,000 Torr down to ultra high vacuum. The System operates as many as five sensors simultaneously. The Series 937A Controller is configured to your specifications — you choose the type and number of sensors, the line voltage, frequency, units of measure, and communications interface. A large, easy-to-read liquid crystal display (LCD) provides simultaneous pressure readings for all sensors. If a sensor is turned off, not connected properly, or used out of range, a relevant message replaces its pressure reading. The Controller's Function Select rotary switch and push-button labels are color-coded to simplify use. Near each sensor's readout, white space is provided so that you may write in sensor information specific to your system. The Controller can be set up with a cold cathode sensor module and two more sensor modules to operate either capacitance manometers or cold cathode, Pirani, Convection Pirani, or thermocouple sensors. After setup, you can confirm your settings with the Controller's setup review feature. A display message will let you know if the Controller has detected a broken sensor wire or improper connection for the Pirani, thermocouple, and Convection Pirani sensors.
Set Points
Control your system with five independently adjustable relay set points. They may be set or disabled from either the front panel or the optional communications module. The set points are nonvolatile, remaining unchanged after powering down or during a power failure.
The Controller also includes additional protection and control set points to turn a cold cathode sensor off at higher pressures, extending the operating time before maintenance is required.
Leak Test
The Leak Test mode consists of a bar graph and variable rate beeper to locate system leaks. This mode operates with any sensor except a capacitance manometer.
Analog Output Signals
Analog output signals, which can be sent to a data acquisition system, are available for each sensor from the Analog connector on the Analog Module. These include buffered, logarithmic, and combination logarithmic output. Buffered and logarithmic analog outputs are available simultaneously from all sensors.
A buffered analog signal responds immediately to sensor signal changes. Logarithmic pressure output ranges from 0 to 10 V and is scaled to 0.6 V per decade of pressure change, regardless of sensor type or channel. However, these outputs are updated each 50 to 250 ms depending on the number of sensors in the controller.
Combination logarithmic output is a combined reading of pressures from a cold cathode sensor and its control sensor (a Pirani or other medium pressure sensor). It provides a continuous analog output representing a wide range of pressure, from 1.0 x 10-11 to as high as 1000 Torr, from a single output.
Computer Interface
Direct computer communication is available to control front panel functions or read pressure and other information remotely. A Controller slot for an optional module supports RS-232 and RS-485.
Typical Applications
Measurement of high vacuum chamber pressures
Control of high vacuum systems and process
sequencing using relay set points
Sensing abnormal pressure and taking appropriate
security measures using relay set points
Controlling system pressure using the analog output as
input to an automatic pressure controller
Starting or stopping system processes with relay set points
Measuring pressures of backfilled gases
Leak testing your vacuum system
Specifications
Measuring Range
1 x 10-11 to 1.0 x 10+4 Torr
1 x 10-11 to 1.3 x 10+4 mbar
1 x 10-9 to 1.3 x 10+6 Pa
1 x 10-8 to 1.0 x 10+7 microns
Operating Temperature Range 5° to 40°C (41° to 104°F)
Storage Temperature Range -10° to 55°C (14° to 131°F)
Relative Humidity 80% maximum for temperatures less than 31°C, decreasing linearly to 50% maximum at 40°C
Altitude 2000 m (6561 ft) maximum
Insulation Coordination Installation (Overvoltage) Category II, Pollution Degree 2
Power Requirement, Nominal 100, 120, 220, or 230/240 VAC 50/60 Hz
Mains Voltage Fluctuations not to exceed ±10% of nominal
Power Consumption 35 W maximum
Fuse Rating, Size
T 0.63A for 100 VAC
T 0.50A for 120 VAC
T 0.315A for 220 VAC
T 0.25A for 230/240 VAC,
Ø 5 mm x 20 mm for all
Process Control Relay 5 nonvolatile, relay set points (one for each channel)
Relay Rating SPDT, 2 A @ 30 V resistive
Relay Response 150 msec maximum
Analog Outputs
Buffered and Logarithmic (0.6 V/dec) outputs for each channel
Two wide-range combination logarithmic outputs.
Zout=100 ohms
Number of Channels 5
Front Panel Controls
Power on-off switch
7-position rotary switch for function selection
5-position rotary switch for sensor selection
2 push-button switches for adjustments & control
Display
All active channels displayed at same time
LCD with 2 significant digits (1 leading) and 1½-digit signed exponent
0.36"-high
7-segment digits
±60° viewing angle
status and error messages
Pressure Units Torr, mbar, Pascal or microns
Update Rate 50 msec per sensor or 250 msec per full set of sensors in Pressure and
Leak Test modes, 100 msec per sensor in all other modes
Leak Test 26-segment bar graph with a variable rate audio signal
Sensor Module Slots 3 (1 for a cold cathode only, 2 for any combination of cold cathode, Pirani, capacitance manometer, thermocouple, and convection Pirani sensor modules)
Sensor Modules (channels/module)
Cold Cathode single
Pirani dual or single
Convection Pirani dual or single
Capacitance Manometer dual or single
Thermocouple dual or single
Computer Interface (Optional) Serial – RS-232 and RS-485 2400, 4800, 9600, 19200 bit rate selectable
Electronic Casing Aluminum
Dimensions (W x D x H) 9½" x 12¼" x 3½"  (241 mm x 311 mm x 88 mm)
Size ½ rack, 2U high
Typical Weight 8.0 lb (3.6 kg)
CE Certification EMC Directive 89/336/EEC Low Voltage Directive 73/23/EEC
Condition:
Attentively used government surplus item.
Tested to power on, not available to test further.
Picked up from a discontinuing facility in working condition.
Photos represent the exact item that will be shipped. Please refer the photos.
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