
Model 709 Hammer Union Pressure Transmitter
709 is a 0-5Vdc output hammer union transmitter to monitor pump pressures in oil servicing applications like drilling, cementing, and hydrofracturing. Available with hazardous location approvals and a variety of electrical connections.
PERFORMANCE
| Full Scale Pressure Ranges: | 0-5K, 10K, 15K, 20K PSIG (0-345, 689, 1034, 1379 bar) | |
| Combined Accuracy (BFSL): | (Non-Linearity, Hysteresis & Repeatability) ≤ ± 0.25% FSO | |
| Full Scale Output (FSO): | 5 Vdc ±1% FSO | |
| Zero Balance: | 0 Vdc ±1% FSO | |
| Compensated Temperature Range: | -20°F to 185°F (-29°C to 85°C) | |
| Operating Temperature Range: | -40°F to 250°F (-40°C to 121°C) | |
| Storage Temperature Range: | -67°F to 302°F (-55°C to 150°C) | |
| Long Term Stability (%FSO): | ≤±0.25% FSO per 6 months | |
| Response Time: | ≤2.5 mSec to reach 90% of FSO | |
| Thermal Effect on Zero: | ≤±1% FSO per 100°F (37°C) | |
| Thermal Effect on Span: | ≤±1% FSO per 100°F (37°C) | 
ELECTRICAL
| Output Signal: | 0 - 5 Volts at 70°F (21°C) | |
| Supply Voltage: | 9-30 Vdc (10.5 to 28 Vdc w/approval) | |
| Power Supply Regulation: | ≤±0.01% FSO per Volt | |
| Load Impedance: | 410K Ohms minimum | |
| Circuit Protection: | Varistor protected across the input leads for surges above 1000V at 50 microseconds | |
| Insulation Resistance: | ≥100 MegOhms to case ground | |
| Calibration Power : | Short pins E & F | |
| Calibration Signal Accuracy: | ≤±0.2% FSO. The exact signal to pressure correlation is provided with each unit | |
| Bridge Resistance: | 10K Ohms nominal | |
| Standard Electrical Connection: | Mates with Bendix P/N PT06E-10-6S or equivalent | |
| PIN OUTS: | PIN A +Power PIN B -Power PIN C +Signal PIN D -Signal PIN E Calibration PIN F Calibration Some models are provided with customer specified wiring. Consult Viatran for exact wiring connections. | 
MECHANICAL
| Standard Pressure Port: | Male hammer union 2 inch #1502 | |
| Pressure Cavity Volume: | 0.4 cubic inches | |
| Zero Effect from Installation: | 0.3% FSO w/200 ft-lbs torque on union #2202 | |
| Proof Pressure: | 1.67 times the FS or 22.5K PSI (1550 bar) for union #1502 30K PSI (2068 bar) for union #2002 whichever is less | |
| Burst Pressure: | ≥3 times FSPR, limited by union #1502: 22.5K PSI (1550 bar) | 
MATERIALS OF CONSTRUCTION
| Wetted Materials: | Inconel X-750, heat treated per MR0175-2000 | |
| Enclosure Material: | 304 stainless steel | |
| Identification: | Laser etched onto body | |
| Enclosure Rating: | NEMA 4X | |
| Weight: | 5.5 lbs nominal (2.4 kg) | |
| Shock Limitation: | 100 G’s | 
OPTIONS
| 
 
 DH 
 | Special range | |
| 
 
 EA 
 | Special calibration ru | |
| NJ | CE label | |
| 
 NX 
 | CSA Intrinsic Safety label | |
| 
 TF 
 | FM Intrinsic Safety label | |
| 
 TP 
 | Low cavity volume sensor design | |
| 
 TW 
 | Russia Intrinsic Safety | |
| 
 ZQ 
 | CG379-C-145-2P (Glenair) electrical connector | |
| 
 ZT 
 | REC-M-10TP-N-04-16 (Jupiter) connector | 







