3
Signet PVDF Conductivity Sensors
General
Instrument Compatibility
.......2850, 8850-3, 8860, 9900
Cable
4.6 m (15 ft) std., 3 conductor with shield, 22 AWG,
max length 30 m (100 ft). For resistivity measurements above
10 M
Ω
or below 20 °C, maximum cable length is 7.6 m (25 ft).
Process Connection
-1V
........................................
3
/
4
in. NPT
-1VD
......................................ISO
7/1-R
3
/
4
Wetted materials
Threaded fi tting.........................PVDF
Insulator ....................................PVDF
Insulator O-ring (2841, 2842) ...FKM
Electrode contacts ....................316L stainless steel
Shipping Weight
2839..........................................0.34 kg (0.74 lb)
2840, 2841, 2842......................0.30 kg (0.66 lb)
Performance
Accuracy ...................................±2% of cell value
Temp. measurement .................PT1000
Temp. response time (T):
2839
......................................5
s
2840
......................................10
s
2841
......................................20
s
2842
......................................30
s
Operating Pressure / Temperature
With thread engagement per ANSI B1.20.1
-10 ºC to 100 ºC @ 6.9 bar (14 ºF to 212 ºF @ 100 psi)
-10 ºC to 131 ºC @ 2.76 bar (14 ºF to 268 ºF @ 40 psi)
Storage Temperature ................ -20 ºC to 131 ºC
(-4 ºF to 268 ºF)
50
3
PSI
BAR
60
212
100
140
284
20
140
-20
-4
0
32 68
25
2
75
5
100
7
°F
°C
Standards and Approvals
• Manufactured under ISO 9001 for Quality,
ISO 14001 for Environmental Management and
OHSAS 18001 for Occupational Health and Safety.
• RoHS Compliant
China RoHS (Go to www.gfsignet.com for details)
Specifi cations
59.3 mm
(2.33 in.)
73.7 mm
(2.90 in.)
140.7 mm
(5.54 in.)
15.9 mm
(0.625 in.)
2839: 0.01 cm
-1
21.5 mm
(0.85 in.)
35.8 mm
(1.41 in.)
102.7 mm
(4.05 in.)
15.9 mm
(0.625 in.)
2840: 0.1 cm
-1
15.9 mm
(0.625 in.)
26.8 mm
(1.13 in.)
109 mm
(4.29 in.)
41.9 mm
(1.65 in.)
2841: 1.0 cm
-1
2842: 10.0 cm
-1
Dimensions
