2
GF 2751-7 pH Electronics
Caution / Warning / Danger
Indicates a potential hazard. Failure to follow all warnings
may lead to equipment damage, injury, or death
Electrocution Danger
Alerts user to risk of
potential of injury or death via
electrocution.
Electrostatic Discharge (ESD)
Alerts user to risk of potential damage to product by ESD
Personal Protective Equipment (PPE)
Always utilize the most appropriate PPE during
installation and service of GF products.
Note / Technical Notes
Highlights additional information or detailed procedure.
Refer to your local Georg Fischer Sales office for the most
current warranty statement.
All warranty and non-warranty repairs being returned must
include a fully completed Service Form and goods must be
returned to your local GF Sales office or distributor.
Product returned without a Service Form may not be
warranty replaced or repaired.
GF products with limited shelf-life (e.g. pH, ORP, chlorine
electrodes, calibration solutions; e.g. pH buffers, or other
solutions) are warranted out of box but not warranted against
any damage, due to process or application failures (e.g. high
temperature, chemical poisoning, dry-out) or mishandling (e.g.
broken glass, damaged membrane, freezing and/or extreme
temperatures).
• Remove electrical power from the transmitter before wiring
input connections.
•
Follow instructions carefully to avoid personal injury or
damage to the electronics.
Warranty Information
Safety Information
Dimensions
Specifications
61.0 mm
(2.40 in.)
94 mm
(3.69 in.)
General
Compatible Electrode ..........2724-00 Flat pH Electrode
Compatible Instrument ........9950-X Chlorine Controller
Mounting ..............................DryLoc
®
connection
Materials ..............................PC+PBT
Cable ...................................4.6 m (15 ft) 3 conductor shielded,
22 AWG
Shipping Weight ..................0.64 kg (1.41 lb)
Performance
Electronics Accuracy ...........± 0.02 pH @ 25 °C
pH........................................ ≤ 0.01 pH
Response Time....................< 6 s for 95% of change
(includes electrode response)
Operational Range ..............-1.0 to 15.00 pH
Electrical
Input Specifications
Input Impedance ..................> 10
11
Ω
Temperature Drift .................± 0.002 pH per ºC
Input Resolution...................0.02 pH, 0.3 ºC
Output Specifications
Digital (S³L)..........................Serial ASCII, TTL level 9600 bps
Max. Cable Length ..............30 m (100 ft)
Environmental
Storage Temperature ...........–20 °C to 85 °C (–4 °F to 185 °F)
Operating Temperature ........0 °C to 85 °C (32 °F to 185 °F)
(electronics only)
Relative Humidity................. 0 to 95%, non-condensing
Enclosure Requirements .......NEMA 4X/IP65 with electrode
connected
Standards and Approvals
•
CE, WEEE
•
RoHS Compliant
•
Manufactured under ISO 9001, ISO 14001 and ISO 45001
China RoHS (Go to gfsignet.com for details)
Declaration of Conformity according to FCC Part 15
This device complies with Part 15 of the FCC rules.
Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and
(2) This device must accept any interference received,
including interference that may cause undesired operation.
