GF Signet 276 Differential Series User manual
Signet 275X Series Wet-Tap DryLoc® pH and ORP Electrodes
Signet 276X Series Diff erential DryLoc® pH and ORP Electrodes
Signet 277X Series Threaded DryLoc® pH and ORP Electrodes
*3-XXXX.090*
Description
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Operating Instructions
Cancer and Reproductive Harm
www.p65warnings.ca.gov
California Prop. 65
WARNING:
www.gfsignet.com.
Service and Support
Product Registration Form
click here
Warranty Information
Product Registration
Safety Information
If installing into a threaded connection:
HAND TIGHTEN
DO NOT USE TOOLS
45 mm
(1.8 in.)
43 mm
(1.7 in.)
121 mm
(5.27 in.)
1 in.
NPT
¾ in.
NPT
¾ in.
NPT
32 mm
(1.3 in.)
276X Series
Differential
Electrode
277X Series
Bulb Electrode
277X Series
Flat Electrode
218 mm
(8.57 in.)
35 mm
(1.4 in.)
11.9 mm
(0.47 in.)
Dimensions
Caution / Warning / Danger
Personal Protective Equipment (PPE)
Pressurized System Warning
Hand Tighten Only
Do Not Use Tools
Note / Technical Notes
DO NOT
FREEZE
Do Not Freeze
Chemical Compatibility
0 40 50 60 70
°C 90 10080
40
60
80
100
4
2
6
6.89
psi
bar
20
10 20 30
32 122
°F 21217650 86
277X Series
0 °C to 85 °C @ 6.89 bar
(32 °F to 185 °F @ 100 psi)
pH/ORP Electrodes
276X Series and 277X Series
Pressure vs. Temperature
276X Series ONLY
Specifi cations
276X Series Diff erential Electrodes
277X Series Threaded Electrodes
General
Reference Electrolyte
Reference Element
Temperature Sensor
Wetted Materials
Operating Temperature
275X Series Wet-Tap Electrodes
General
Wetted Materials
Temperatures
Standards and Approvals
REACH Information
In-Line Installation
See peel & stick warning label on back!
Attach near sensor
3-2700.615 (B-04/08)
1. Use appropriate eye, face, hand, body
and/or respiratory protection when using
chemicals or solvents
2. Prior to installation or removal:
a. Depressurize and vent system
b. Drain below sensor level
3. Confirm chemical compatibility before use
4. Do not exceed the maximum
temperature/pressure specifications
5. Do not alter product construction
If installing into a threaded connection:
6. Inspect threads to ensure integrity. Do not
install a sensor that has damaged threads
7. Apply PTFE tape to the process connection
threads in accordance with industry
practices
8. Hand tighten the sensor into the process
connection. DO NOT USE TOOLS
Failure to follow
these instructions may
result in personal injury
WARNING
SAFETY INSTRUCTIONS
CAUTION:
NOTE:
YES
YES
-15° +15°
0°
YES YES
NO
NO
NO
0°
Horizontal
YES
YES
YES
YES
YES
1
2
3
4
Customer supplied Tees and Fittings
3719 Wet-Tap Assembly:
3-3719-11
3-3719-12
3-3719-21
3-3719-22
Wet-Tap pH or
ORP Sensor:
3-2756-WTP
3-2756-WTP-1
3-2757-WTP
2760
Preamplifier:
3-2760-11
3-2760-21
OR
2751 Smart Sensor
Electronics:
3-2751-1
3-2751-2
276X
277X
275X Wet-Tap
Closed
tanks
Open
tanks
4
12
3
3
Fill with
3 to 4 in.
of sealant
Preamplifier
Customer
supplied
pipe
3/4 in. NPT or
ISO 7/1-R 3/4
Sealant
Lubricate
O-ring(s)
J-Box
A.
C.
E.
B.
A.
D.
Caution: If liquid level is not constant, always ensure liquid contact with electrode tip
2 in.
min.
Closed
tanks
B.
C.
E.
A.
Open
tanks
A.
B.
C.
D.
B.
C.
In-line removal Instructions:
Removing from In-Line Installation
Submersible Installations
Electrode Care
Caution:
• General Cleaning –
• Biofi lm and bacterial growth –
• Alkaline or Scale –
• Acidic contaminants –
• Oily or organic coatings –
• ORP Platinum Coating –
Electrode Conditioning
Numeral = Year
5 = 2010
6 = 2011
7 = 2012
8 = 2013
9 = 2014
0 = 2015
1 = 2016
2 = 2017
3 = 2018
4 = 2019
5 = 2020
6 = 2021
Letter = Month
N = January
M = February
L = March
K = April
J = May
H = June
G = July
F = August
E = September
D = October
C = November
B = December
Example: K2 = manufactured in April 2017
Electrode Date Code
K2K2
There are two functions in a pH electrode that require the system to be calibrated:
Temperature Calibration
*
**
NOTE:
pH error due to temperature changes in fl uid
°C pH 2 pH 3 pH 4 pH 5 pH 6 pH 7 pH 8 pH 9 pH 10 pH 11 pH 12
15 **0.06
25 * 0
35
45
55
Table 1
pH System Calibration
Off set and Slope Calibration
Theoretical mV
Values @ 25 °C
Table 2
pH System Calibration cont.
ORP electrodes do not incorporate a temperature sensor, so the only system calibration required is the electrochemical adjustment.
Zobell's
solution
Light's
solution
4 pH buff er
w/quinhydrone*
7 pH buff er
w/quinhydrone*
Table 3:
ORP System Calibration
How to calculate a pH electrode slope effi ciency
Example 1
Example 2
Buff er Solutions
Electrode Storage
Prior to storage -
Short term storage (up to 24 hours) -
Long term storage (longer than 24 hrs) -
276X Series Diff erential Electrodes
Replacing the Salt Bridge
NOTE:
Maintenance and Cleaning
WARNING!
Response Time/Stability
Ordering Information
Mfr. Part No. Code Description
Signet 275X Series Wet-Tap DryLoc pH and ORP Electrodes
pH Electrode
ORP Electrode
Signet 276X Series Diff erential DryLoc pH and ORP Electrodes
pH Electrode
ORP Electrode
Signet 277X Series Threaded DryLoc pH and ORP Electrodes
pH Electrode
Signet 277X Series Threaded DryLoc pH and ORP Electrodes
ORP Electrodes
Georg Fischer Signet, LLC, 3401 Aerojet Avenue, El Monte, CA 91731-2882 U.S.A. • Tel. (626) 571-2770 • Fax (626) 573-2057
For Worldwide Sales and Service, visit our website: www.gfsignet.com • Or call (in the U.S.): (800) 854-4090
For the most up-to-date information, please refer to our website at www.gfsignet.com
Accessories and Replacement Parts for all pH
Mfr. Part No. Code Description
Calibration
Accessories and Replacement Parts for 275X
Accessories and Replacement Parts for 276X
Ordering Information cont.
Special Order Options - Please consult the factory
Mfr. Part No. Code Description
Electrode
Special Order Options- Please consult the factory
This manual suits for next models
2
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