GF Signet 2760 DryLoc pH_ORP Preamplifier and Connectors - Manual

Signet 2760 DryLoc
®
pH/ORP Preamplifi er
SAFETY INSTRUCTIONS
1. Depressurize and vent system prior to installation or removal.
2. Confi rm chemical compatibility before use.
3. Do not exceed maximum temperature/pressure specifi cations.
4. Wear safety goggles or faceshield during installation/service.
5. Do not alter product construction.
6. When using chemicals or solvents care should be taken and appropriate eye,
face, hand, body, and/or respiratory protection should be used.
Technical Data
General
Compatible Electrodes:
Signet DryLoc Electrodes:
2724-2726, 2756-WTx - 2757-WTx,
2764-2767, 2774-2777
Compatible Instruments:
Preamplifi er models to Signet 5700, 8750:
2760-1, -2, -11, -21
Connector models to non-Signet products:
2760-3, -4, -31, -41
Response Time (includes response time of electrodes):
• pH:
< 6 sec. for 95% of change
• ORP: application dependent
• Temperature,
τ:
20 sec.
Electrical (2760-1, -2,-11, -21 Preamplifi ers)
• Maximum Offset:
± 7 mV
• Input Impedance, Z: > 10 11 Ω
• Supply Voltage (V+ to V–): 6 to 12 VDC
• Current consumption:
< 1 mA
Environmental
• Enclosure Rating:
2760-1, -2, -3, -4: NEMA 6P/IP68
2760-11, -21, -31, -41: NEMA 4
with electrode and watertight
conduit and/or extension pipe
connected
Materials:
• Submersible versions:
CPVC (Gray)
• In-Line versions: PBT (Yellow)
Cable: 4.6 m (15 ft) 6-conductor w/shield,
22 AWG
Maximum cable: 122 m (400 ft)
Shipping Weight: 0.64 kg (1.41 lb)
Operating Temperature: 0 °C to 85 °C (32 °F to 185 °F)
Storage Temperature: –20 °C to 85 °C (–4 °F to 185 °F)
Relative Humidity: 0 to 95%, non-condensing
(without electrode connected)
Standards and Approvals
• Manufactured under ISO 9001 and ISO 14001
China RoHS (Go to www.gfsignet.com for details)
Description
The Signet 2760 pH/ORP Preamplifi ers with DryLoc
® connectors are part of Signet's growing line of sensors for industrial fl uid
measurement and control.
There are two styles of Preampliers, and each is available with NPT or ISO threads at the cable outlet. They all connect to four different
families of pH and ORP electrodes to supply an amplifi ed mV (analog) signal to Signet instruments.
The 2760 family also offers a set of connectors to link the same electrodes to third-party equipment that require a direct millivolt signal for
pH measurement without amplifi cation.
Dimensions
*3-2760.090*
3-2760.090 Rev. H 05/11 English
English
31.75 mm
(1.25 in.)
89.4 mm
(3.52 in.)
70.1 mm
(2.76 in.)
56.6 mm
(2.23 in.)
3-2760-11 Preamplifi er, In-line, NPT
3-2760-21 Preamplifi er, In-line, ISO
3-2760-31 Connector, In-line, NPT
3-2760-41 Connector, In-line, ISO
3-2760-1 Preamplifi er, Sub, NPT
3-2760-2 Preamplifi er, Sub, ISO
3-2760-3 Connector, Sub, NPT
3-2760-4 Connector, Sub, ISO
CHEMICAL COMPATIBILITY WARNING
The retaining nuts of certain pH and ORP sensors and
preamplifi ers are not designed for prolonged contact
with aggressive substances. Strong acids, caustic
substances and solvents or their vapor may lead to failure of
the retaining nut, ejection of the sensor and loss of the process
fl uid with possibly serious consequences, such as damage to
equipment and serious personal injury. Retaining nuts that may
have been in contact with such substances, e.g. due to leakage
or spilling, must be replaced.
35.0 mm
(1.38 in.)
61.0 mm
(2.40 in.)
101 mm
(4.0 in.)