GF Signet 2839-2842 NPT Conductivity-Resistivity Electrodes - Manual

Signet 2839 to 2842 Conductivity Sensors
3-2840.090 Rev H 04/12 English
English
SAFETY INSTRUCTIONS
1. Depressurize and vent system prior to installation or removal.
2. Confirm chemical compatibility before use.
3. Do not exceed maximum temperature/pressure specifications.
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.
Table of Contents
1. Specifications
2. Cell constant selection
3. Installation
4. Wiring
5. Maintenance
6. Ordering information
1. Specifications
Dimensions
Instrument Compatibility:
• 2850, 5800CR, 5900, 8850-X, 8860, 9900
Standards and Approvals:
• Manufactured under ISO 9001 and ISO 14001
Shipping Weight:
• 2839: 0.34 kg (0.74 lb)
• 2840, 2841, 2842: 0.30 kg (0.66 lb)
Process connection:
• -1 versions: 3 /
4
in. NPT
• -1D versions: ISO 7/1-R 3 /
4
Cable:
• 4.6 m (15 ft) std., 3 conductor with shield, 22 AWG,
max length 30 m (100 ft). For resistivity measurements above
10 MΩ or below 20 °C, maximum cable length is 7.6 m (25 ft).
Performance:
Accuracy: ±2% of cell value
Temp. measurement: PT1000
Temp. response time (τ):
2839: 5 s 2840: 10 s
2841: 20 s 2842: 30 s
Operating temperature/pressure:
(with thread engagement per ANSI B1.20.1)
-1X versions:
• -10 to 100 ºC @ 6.9 bar (14 to 212 ºF @ 100 psi)
• -10 to 131 ºC @ 2.76 bar (14 to 268 ºF @ 40 psi)
Storage temperature: -20 to 131 ºC (-4 to 268 ºF)
Wetted materials:
Threaded fitting: PEEK
Insulator: PEEK
Insulator O-ring (2841, 2842): FPM
Electrode contacts: 316L stainless steel
59.3 mm/
2.33 in.
73.7 mm/
2.90 in.
140.7 mm/
5.54 in.
15.9 mm/ 0.625 in.
21.5 mm/
0.85 in.
35.8 mm/
1.41 in.
102.7 mm/
4.05 in.
15.9 mm/ 0.625 in.
15.9 mm/ 0.625 in.
26.8 mm/
1.13 in.
109 mm/
4.29 in.
41.9 mm/
1.65 in.
2839: 0.01 cm -1 2840: 0.1 cm -1 2841: 1.0 cm -1 2842: 10.0 cm -1
General
50
3
PSI BAR
60
212
100 140
284 20
140
-20
-4
0
32 68
25
2
75 5
100
7
°F
°C
China RoHS (Go to www.gfsignet.com for details)
*3-2840.090*