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Vacuum Measurement and control systems - Edwards (formely known as BOC Edwards) vacuum guages

Edwards (formerly BOC Edwards) ATC Active Thermocouple Gauge

65 to 1.3 x 10^-3 mbar

The Edwards (formerly known as BOC Edwards) active Thermocouple (ATC-E) gauges mount directly on the thermocouple tube to form a compact stand alone transducer. The ATC-E electronics module drives both medium and low pressure gauge tubes. These gauges offer a cost effective measuring solution for higher pressures.

Edwards (formerly BOC Edwards) ATC Active Thermocouple Gauge

Features and Benefits

Drive electronics mount directly on the gauge tube
Simplifies system design
Saves valuable rack space
Wide range, regulated, internal power supply
Runs from standard d.c power supplies
+13.5 to +36 V
Tolerant to voltage fluctuations
Standard analogue output 0 to +10 v d.c. And gauge identifier
Easy to interface with a computer or PLC
Fault operation indication
Adjustable set point with vacuum status LED
Use for process control and interlocking
Includes a digital vacuum status signal
Set-point level ready visually
Low output impedance and integral Faraday shield
Provides high level of noise immunity
Permits long cable runs (up tp 100 metres)
Choice of medium and low pressure gauge tubes
ATC-D covers from 50 to 5 x 10^-2 Torr
ATC-M covers from 1 to 10^-3 Torr

Technical specification

ATC-E electronics module

Power Supply: +13.5 to +36 V d.c. (max 1 volt ripple)
Power consumption: 0.54 W (max)
Output signal:
Operating: 2 to 10 V d.c.
Fault Output: 0 to 2 V d.c. 10 to 13.5V d.c.
Output Impedance: 0.1 Ohm
Minimum Load: 10 k Ohms
Tube type selection
Adjustments: Adjust set point visually via potentiometer
Set point: Open collector transistor
Range of set point: 2% to 85% full scale voltage
Fixed hysteresis: 12% full scale voltage
Level settings: ± 2% full scale voltage
Rating: 40 V d.c. 100mA max
Temperature range:
Operating temperature: +5 to +60 ºC
Storage temperature: 0 to +70 ºC
Weight: 110g
External interface connector: 8 way FCC68(RJ45) socket
Standards
Electronic design: BS EN 61010-1
Eletromagnetic compatibility: EN 61326 Industrial location Class B emissions
Flame resistant casing: UL 94 (V0)
ATC-D, ATC-M gauge tubes
Pressure Range
ATC-D
50 to 5 x 10^-2 Torr
(65 to 6.5 x 10^-2 mbar)
ATC-M
1 to 1 x 10^-3 Torr
(1.3 to 1.3 x 10^-3 Torr)
Maximum over pressure:
ATC-D: 10 bar absolute
ATC-M: 3.4 bar absolute
Weight: 55g
Internal Volume
ATC-D/ATC-M: 1 cm³/8cm³
Vacuum fitting 1/8” NPT
Pin allocation:
1: power supply positive
2: power supply common
3: Gauge output
4: Gauge identification
5: Signal common
6: Set point output
7: Not connected
8: Not connected

Ordering information

Product Description	Ordering Number
ATC-E Electronics module	D35108000
ATC-D-1/6 inch NPT gauge tube	D35512000
ATC-M-1/8 inch NPT gauge tube	D35513000
Accessories and Spares
1/8 inch NPT to NW10 adaptor	C10501072
Surge protector	D40006000
Cables
0.5m active gauge cable	D40001005
1m active gauge cable	D40001010
3m active gauge cable	D40001030
5m active gauge cable	D40001050
10m active gauge cable	D40001100
15m active gauge cable	D40001150
25m active gauge cable	D40001250
15m active gauge cable (24 AWG)	D40005150
25m active gauge cable (24 AWG)	D40005300
Non-standard lengths and screened cables available on request Other accessories and supporting products