GF Signet 3719 pH_ORP Wet-Tap - Manual

Signet 3719 pH/ORP Wet-Tap
• Do not exceed maximum temperature/pressure specifi cations.
• Wear safety goggles or face shield during installation/service.
• Do not attempt to disassemble the retraction housing and the
electrode piston.
• Do not alter product construction.
• Failure to follow safety instructions may result in severe
personal injury.
• Retract electrode before any pipe cleaning operation.
1. Description
The Signet 3719 pH/ORP Wet-Tap allows installation and removal of pH or ORP electrodes without the need for process shutdown
during routine electrode maintenance and calibration. Process isolation is achieved with a double O-ring seal on a unique and
compact retraction assembly; no separate valve is required. A cam-activated automatic locking mechanism, SafeLoc™, and the short
stroke design help to assure operator safety.
1. Description
2. Specifi cations
3. Dimensions
4. 3719 System Overview
5. Installation
6. Maintenance & Cleaning
7. Troubleshooting
8. Ordering Information
*3-3719.090*
3-3719.090 Rev L 12/11 English
English
General
• Compatible
sensors:
2716-WT Twist-Lock pH Electrode
2717-WT Twist-Lock ORP Electrode
2756-WT DryLoc ® pH Electrode
2756-WT-1 DryLoc ® pH Electrode
2756 -WTP DryLoc ® plastic pH electrode
2756-WTP-1 DryLoc ® plastic pH electrode
2757-WT DryLoc ® ORP Electrode
2757-WTP DryLoc ® plastic ORP electrode
• Shipping Weight:
Wet-tap assembly: 1.2 kg (2.7 lbs.)
Electrode: 0.13 kg (0.3 lb)
• Process Connection: 3-3719-11: 1½ in. NPT
3-3719-21: 2 in. NPT
3-3719-12: ISO 7/1-R1½
3-3719-22: ISO 7/1-R2
2. Specifi cations
Storage Temperature:
•
Wet-tap assembly: -15 to 120 °C (5 to 248 °F)
• Electrode: 0 to 50 °C (32 to 122 °F)
Wetted materials
• Retraction
Housing: CPVC
• O-rings: FPM
• Electrode Body: Glass OR Plastic
• Electrode junctions: Porous PTFE
• Electrode sensing surface:
Glass Membrane (pH)
Platinum (ORP)
• Electrode O-rings: FPM
WARNING!
If used in conditions that exceed recommended
pressure ratings, this product can pose a serious
hazard.
We urge customers to read the specifi cations
carefully before installing and operating this product.
Improper use can cause components and process
liquids to be expelled at high speeds and cause
serious personal injury.
Other Materials
• Locking
Shroud: PVC
• Hardware: 316 stainless steel
Performance
•
Maximum Flow Velocity: 3 m/s (10 ft/s)
• Effi ciency: > 97% @ 25 °C (77 °F)
• Response Time: pH: <5s for 95% of signal change
ORP: Application dependent
• Drift: < 2 mV per week
• Operating Range: pH: 0 to 14 pH
ORP: –2000 to +2000 mV
• Reference Junctions: Porous PTFE
• Electrolyte: 3.5M KCl
• Elements: Ag/AgCl
• Temp. Sensor (pH): 3K Balco (3-2716-WT,
3-2756-WT-1, WTP-1)
PT1000 (3-2756-WT, -WTP)
• Temp. response time (  438 s
• Sodium Ion Error: < 0.05 pH in 0.1 molar
Na+ ion at 12.8 pH
• Impedance (pH): <150 MΩ @ 25 °C
Standards and Approvals
•
Manufactured under ISO 9001 and 14001
25
China RoHS (Go to www.gfsignet.com for details)