Product Description
Product Details
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Manufacturer: Bently Nevada
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Series: 3500/77M
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Model/Part Number: 3500/77M 176449-07
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Model Type: Recip Cylinder Pressure Monitor
Spares and Accessories
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176449-07: 3500/77M Cylinder Pressure Monitor
Description
The 3500/77M Recip Cylinder Pressure Monitor is a 4-channel monitor designed to accept inputs from Bently Nevada approved pressure transducers. It conditions the signal to make various pressure measurements for reciprocating compressors and compares the conditioned signals with user-programmable alarms.
Specifications
Inputs
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Signal: Accepts 1 to 4 channels of Bently Nevada approved positive voltage 3rd-party pressure transducers (psia).
Measured Variables
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Cylinder Pressure:
- Discharge Pressure
- Suction Pressure
- Maximum Pressure
- Minimum Pressure
- Compression Ratio
- Peak Rod Compression
- Peak Rod Tension
- Degree of Rod Reversal
Input Impedance
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Cylinder Pressure I/O: 50 kΩ
Power Consumption
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7.8 Watts with transducer supplies at full load.
Environmental Limits
| Feature |
Specification |
| Operating Temperature |
-30°C to +65°C (-22°F to +150°F) when used with Internal/External Termination Cylinder Pressure I/O Module |
| Storage Temperature |
-40°C to +85°C (-40°F to +185°F) |
| Humidity |
95%, non-condensing |
Physical Specifications
Monitor Module
| Feature |
Specification |
| Dimensions (H x W x D) |
241.3 mm x 24.4 mm x 241.8 mm (9.50 in x 0.96 in x 9.52 in) |
| Weight |
0.91 kg (2.0 lb) |
I/O Modules
| Feature |
Specification |
| Dimensions (H x W x D) |
241.3 mm x 24.4 mm x 99.1 mm (9.50 in x 0.96 in x 3.90 in) |
| Weight |
0.20 kg (0.44 lb) |
Ordering Information
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Model: 3500/77M Cylinder Pressure Monitor
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Part Number Format: 3500/77M-AA-BB
A: I/O Module Type
| Option |
Description |
| 03 |
Cylinder Pressure I/O with Internal Terminations |
| 04 |
Cylinder Pressure I/O with External Terminations |
B: Agency Approval Option
| Option |
Description |
| 00 |
None |
| 01 |
cNRTLus |
| 02 |
ATEX/IECEx/CSA |
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