• Monroe 177A 防爆靜電監視儀
  • Monroe 177A 防爆靜電監視儀
  • Monroe 177A 防爆靜電監視儀
  • Monroe 177A 防爆靜電監視儀
  • Monroe 177A 防爆靜電監視儀
  • Monroe 177A 防爆靜電監視儀

Monroe 177A 防爆靜電監視儀

● Large, easy-to-read LED displays provide instant status of all channels
● Two alarm threshold levels warn as each threshold is exceeded
● Analog and digital interfaces accommodate process control and data acquisition requirements
● Intrinsically safe sensors are approved for use in hazardous locations when used with approved IS barriers
● Remote sensors can be located up to 1000 feet from the monitor
● Chopper-stabilized measurement technique is drift free, even in ionized environments
型號 : Monroe 177A

Multi-point Fieldmeter and Alarm System. Detect static buildup before it becomes a problem. Avoid process interruptions, product loss, electrical shocks, fires, and explosions.

The model 177A is the only intrinsically-safe, multiple-channel fieldmeter system available for long-term, unattended monitoring of static levels at critical points within industrial processes. It cost-effectively monitors up to four locations to determine if static control systems are operating effectively, and it warns when static levels exceed safe operating limits, above which material misbehavior, shocks to personnel, explosions, or fires might occur. Several measurement ranges are available. Tailor sensitivity, range, and alarm thresholds to your needs.

Monitor Console Temperature Range:                       
+15° to +45° C
Analog Outputs (user selectable):
±10 V, 0 - 5V (2.5V, ±2.5V full scale); <10 Ω impedance; or simultaneous 4-20mA (optional)
RS232/485 Control:
Channel status, channel disable / enable, group control

±3% of full scale at analog outputs            

±3% of full scale, ±2% counts 

+0.3 counts/0C at front panel meters

Four 3½-digit LED’s, 0.6” (one per input channel)
Power Requirements: 
90-260 VAC, 47-60 Hz; 13 Watts max.
4 - 20 mA Option Power Requirements:                       
Internal power supply 11V min External power supply 24 V max
Alarm Relays:

Per channel fail safe, NC (Form B)

System O.K.

Channel O.K.



Contact Ratings:
DC: 1A, 30V AC: 0.5A, 125V
Connector Styles:

RS485 - DB9

Probe - DB9

Analog Out - BNC

Test Connector - Screw Terminals

4-20 mA option - Screw Terminals

1¾ x 19 x 11 inches (4.45x 48.26 x 27.9 cm) Mounts in a standard 19” rack
approx. 9 lbs
Enclosure (optional) Capacity:
Two Monitor Consoles
4.5 x 20 x 14 inches (11.4 x 50.8 x 35.6 cm)
Accessories Included:

Manual on CD, 110V Line Cord, 220V LineCord, DB9 M/F Straight-Thru Cable, USB A-Male/B-Male Cable, Mounting Hardware. 2 - 2 Position & 4 – 6 Position plugs

• Intrinsically safe sensor operation (with optional barriers) in explosive atmospheres. 

• 4 channel Static Monitor detects static levels in as many as four locations up to 1000 feet away 

• Accurate and drift-free measurement including ionized environments 

• Provides analog outputs and control via RS232/485 and front panel 

• Control and data acquisition, configuration via RS232/485 using MODBUS interface format 

• Built in, fully configurable dual level alarms programmable via front panel, PC or PLC 

• Cascade up to 32 units via RS485 providing 128 sensor locations

• Simple Windows® GUI interface for set up and control 

• PLC compatible using MODBUS protocol 

• Password Security 

• “Fail safe” relay configuration 

• “Bad Input” protection or console failure indication 

• Founded on proven Monroe Electronics Non-Contact Electrostatic Fieldmeter technology


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