Product Model
1756-CFM
Selling Points
- 11. Configurable for Precision: The 1756-CFM is designed to be highly configurable, allowing users to tailor the module to their specific metering needs. This flexibility ensures accurate and reliable measurements in various applications.;
- 22. Totalizer Mode Support: This module supports totalizer mode, which is essential for metering applications where cumulative measurements are required. This feature helps in tracking fluid flow over time, making it ideal for industrial processes.;
- 33. Integral AGA 7 Compensation: The module includes integral AGA 7 compensation, which helps in correcting for temperature variations. This ensures that the measurements remain accurate even in changing environmental conditions.;
- 44. High-Performance Flowmeter Inputs: The module features 2 flowmeter inputs, each capable of handling high-performance flow measurement tasks. These inputs are designed to provide precise readings, making the module suitable for demanding applications.;
- 55. Versatile Power Supply Compatibility: The 1756-CFM can operate within a wide power supply range of 4-5.5 VDC to 10-31.2 VDC, making it compatible with various industrial power systems. This versatility ensures that the module can be easily integrated into different control systems.
Technical Specifications
Detailed engineering parameters based on manufacturer documentation
| Parameter | Value | Parameter | Value |
|---|---|---|---|
Dimension Unit | CM | Weight Unit | KG |
Weight | 0.354 | Stock Status | STOCKED |
Dimension Length | 23.495 | Dimension Width | 18.415 |
Lead Time | 5 | Dimension Height | 5.715 |
Quick Turnaround | false | Preferred Availability | true |
Repairable | REPAIRABLE | Enclosure type | None (open-style) |
Totalizer fill and prover | Yes | Flowmeter input voltage | ±30V, selectable input thresholds of 50mV @ 1.3V and 4V: ±30V peak unterminated open circuit voltage, magnetic pickup, TTL compatible, input voltage >1.3V DC is Logic 1 and -0.7...1.3V DC is Logic 0, 12...24V DC powered preA output, 4V DC threshold |
Filtering (inputs F0 & F1) | Firmware selectable: high-speed 100 kHz or low-pass filter for frequencies <70 Hz | Gate input voltage range | 5V ops: 4.5...5.5V DC @ 12/24V ops: 10...26.4V DC |
Mechanical filter debouncing (Z0 & Z1 Inputs) | Software selectable | Flowmeter input impedance | 5 k? ±30% resistive |
Count range, max | 2, 147, 483, 647 | Input sampling period | User selectable |
Gate input on-state current, nom | 15 mA | Gate input on-state current, min | 4 mA |
Input frequency, max | 100 kHz @ flowm inputs (overrange occurs at 100 kHz) | Output voltage range, nom | 5V ops: 4.5...5.5V DC @ 3...20mA load per point, 12/24V ops: 10...31.2V DC @ 40mA...1 A load per point |
Output short circuit protection | Electronic (no indication of fault. remove overload and toggle output on/off to restore.) | Output reverse polarity protection | Yes (if wired incorrectly, module outputs can be permanently disabled.) |
Output current per point | 1 @ 10...31.2V DC @ 20mA @ 4.5...5.5V DC | Surge current | 2 A @ 50 ms, repeatable every 2s |
Overload current | Electronic (<4 A) | Output voltage source | Customer supplied |
Output type | IEC 1 A 24V DC | Output control | Any number of outputs is assignable to any of two flowm channels each output can have 2 âturn-onâ and âturn-offâ preset values |
Output switching time | <50 μs turn on, <300 μs turn off, Outputs triggered by Total, all other âturn-onâ and âturn-offâ times <1 ms | Reverse polarity protection | Outputs only |
Off-state leakage current, max | <300 μA @ 31.2V DC | On-state voltage drop, max | 0.6 ? x current |
Nonoperating temperature | -40 °C | Radiated RF immunity | 10 V/m with 1 kHz sine-wave 80% AM from 80...2000 MHz, 10 V/m with 200 Hz 50% Pulse 100% AM @ 900 MHz, 10 V/m with 200 Hz 50% Pulse 100% AM @ 1890 MHz, 3 V/m with 1 kHz sine-wave 80% AM from 2000...2700 MHz |
Surge transient immunity | ±1 kV line-line (DM) and ±2 kV line-earth (CM) on unshielded output and power ports, ±2 kV line-earth (CM) on shielded input ports | Operating temperature | 0 to 60 °C |
EFT/B immunity | ±4kV @ 5kHz on unshielded output and power ports, ±4kV @ 5kHz on shielded input ports | Conducted RF immunity | 10V rms with 1 kHz sine wave 80% AM from 150 kHz...80 MHz on shielded signal ports |
Relative humidity | 5...95% noncondensing | ESD immunity | 6 kV contact discharges, 8 kV air discharges |
Emissions | IEC 61000-6-4 | North American temperature code | T4 |
Surrounding air temperature, max | 60 °C | Vibration | 2 G @ 10...500 Hz |
Shock | Operating: 30 G, Non operating: 50 G | RTB keying | User-defined mechanical |
Slot width | 1 | Frequency | Resolution: 0.0005 Hz |
High resolution, max | 100 khz | Short-circuit protection, outputs available | No |
Redundancy | No | Wire category | 2 on signal ports, 1 on power ports |
Isolation voltage | 250V (continuous), reinforced insulation type, I/O-to-backplane, 250V (continuous), basic insulation type, I/O group-to-group | Inputs | Two flowm (F) inputs used for all modes, Two gate inputs used in Totalizer mode for prover/store count, 4 (2 per channel) |
Power dissipation, max | 6 W @ 60 °C (140 °F) | Outputs | 2 current sourcing |
Module keying | Electronic, software configurable | Current draw | 300mA @ 5.1V, 16mA @ 24V |
Thermal dissipation | 20.4 btu/h | Total backplane power | 1.7 W |
Type of electric connection | Screw connection | Voltage type of supply voltage | DC |
Digital outputs configurable | No | Digital inputs configurable | Yes |
Suitable for safety functions | No |
Specifications may be subject to change without notice