Georg Fischer 2610 Operating Manual

Signet 2610 Process Optical Dissolved Oxygen Sensor

*3-2610.090*

3-2610.090 Rev. 3 04/18

Operator's Manual

Gen II

Description

Your new GF Signet Gen II Dissolved Oxygen Sensor (RDO® Pro) is a rugged,
reliable sensor designed to deliver accurate dissolved oxygen (DO) data across
a wide measuring range while reducing maintenance costs. It features the latest
optical technology for DO measurement.

The Gen II DO sensor comes with three standard outputs:

• Digital (S3L) to communicate with Signet 9900, 9950 and 8900 instruments

• 4 to 20 mA, factory default ranged 0 to 20 ppm

• ModBus RS485

The Gen II system consists of the following:

• Sensor body with removable nose cone

• 10 m (32.8 ft) cable with stripped and tinned ends

• Optical DO sensing cap

• Titanium Temperature Sensor

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RDO is a registered trademark of In-Situ® Inc., Fort Collins, CO USA

Table of Contents

Warranty Information ..............................................................................2

Product Registration ...............................................................................2

Safety Information ..................................................................................2

Chemical Compatibility ...........................................................................2

Care and Maintenance ...........................................................................2

Specifi cations .........................................................................................3

Dimensions .............................................................................................3

Serial Numbers .......................................................................................3

Unpacking the Sensor ............................................................................4

Calibration ..............................................................................................4

Wiring .....................................................................................................5

Sensor Cap Replacment ........................................................................6

Sensor Installation .............................................................................. 6-7

Ordering Information...............................................................................8

Warranty Information

Chemical Compatibility

Refer to your local Georg Fischer Sales offi ce 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 offi ce or distributor.
Product returned without a Service Form may not be
warranty replaced or repaired.

Signet products with limited shelf-life (e.g. pH, ORP, chlorine
electrodes, calibration solutions; e.g. pH buffers, turbidity
standards or other solutions) are warranted out of box but not
warranted against any damage, due to process or application
failures (e.g. high temperature,
mishandling (e.g. broken glass,

chemical poisoning, dry-out) or

damaged membrane, freezing

and/or extreme temperatures).

Product Registration

Thank you for purchasing the Signet line of Georg Fischer
measurement products.

If you would like to register your product(s), you can now
register online in one of the following ways:

• Visit our website www.gfsignet.com.
Under Service and Support click on

Product Registration Form

• If this is a pdf manual (digital copy),

click here

• Do not use organic solvents - they will damage the foil.

• Do not wet the lens area with water or any solution.

• Use Alconox to remove grease or other matter.

• Soak in vinegar and deionized (DI) water to remove
mineral deposits or extensive fouling.

Care and Maintenance

Cleaning the Sensor Cap

1. Leave the cap and nose cone on the sensor!

2. Rinse the sensor with clean water from a squirt bottle or
spray bottle.

3. Gently wipe with a soft-bristled brush or soft cloth if
biofouling is present. Use Alconox® to remove grease.

4. If extensive fouling or mineral build-up is present, soak
the cap end in vinegar for 15 min., then soak in deionized
water for 15 min.

Safety Information

Caution / Warning / Danger

Indicates a potential hazard. Failure to follow all warnings
may lead to equipment damage, injury, or death

Personal Protective Equipment (PPE)

Always utilize the most appropriate PPE during
installation and service of Signet products.

Hand Tighten Only

Overtightening may permanently damage product threads
and lead to failure of the retaining nut.

Do Not Use Tools

Use of tool(s) may damage product beyond repair and
potentially void product warranty.

Do Not Freeze

Products are temperature sensitive and may contain

DO NOT
FREEZE

freezable liquids. Freezing damage to pH, ORP, and
Chlorine electrodes voids product warranty.

Do not use organic solvents - they will damage the foil.
Do not remove the cap from the sensor prior to brushing.

Cleaning the Optical Window

Perform only when changing the cap. See full instructions in
the sensor replacement cap kit.

Do not wet the lens area with water or any solution.

Remove the cap and gently wipe the window with the
supplied lens wipe. Use only the supplied lens wipe
for cleaning. Do not use any other wipe or material.

Cleaning the Sensor Body

With the sensor cap installed on sensor, gently scrub sensor
body with a soft-bristled brush or nylon dish scrubber. Use
Alconox to remove grease or other matter. Soak in vinegar
and deionized (DI) water to remove mineral deposits or
extensive fouling as in step 4, above.

Cap Storage

• Prior to installation: Store in factory supplied container.

• Installed: Keep or store in the calibration chamber with the

storage cap attached and a few drops of clean water.

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Signet 2610 Process Optical Dissolved Oxygen Sensor

General

Sensor type .............................. Luminescent dissolved oxygen

sensor

Transmitter/local display ...........Optional, not required

Communications options .......... Digital (S

3

L) Modbus (RS485),

4 to 20 mA,

Cable length ............................. 32.8 ft/10 meters

Internal mounting thread...........1¼ NPT

Performance

Salinity range ............................ 0 to 42 PSU, fi xed or

real-time capable

pH range ...................................2 to 10 pH

Barometric range ...................... 507 to 1115 mbar, fi xed or

real-time capable

Idle current................................160 μA typical at 24 VDC

Maximum pressure ...................300 psi

Range ....................................... 0 to 20 mg/L concentration,

0 to 200% saturation

Accuracy (DO) .......................... ±0.1 mg/L, 0 to 8 mg/L,

±0.2 mg/L, 8 to 20 mg/L

Response time.......................... Cap T90: 30 sec

Cap T95: 37 sec @ 25 °C

Resolution.................................0.01 mg/L

Measure current .......................6 mA typical at 24 VDC

DimensionsSpecifi cations

20.3 cm

68.6 mm
(2.7 in.)

43.7 mm
(1.72 in.)

(8.0 in.)

Serial Numbers

The instrument part number, code number and serial number is
engraved on the side of the unit.

Environmental

Wetted Materials .......................ABS, Titanium, FKM

Usage life of cap ....................... 2 year from the fi rst

instrument reading

Shelf life of cap ......................... 36 months from date of

manufacture (install w/in 12 mo.

of manufacture)

Operating temperature .............0 °C to 50 °C (32 °F to 122 °F)

IP rating .................................... IP-67 with cap off, IP-68 with

cap installed

Storage conditions, cap ............ 1 °C to 60 °C (33 °F to 140 °F),

in factory container

Storage conditions, sensor: ......-5 °C to 60 °C (23 °F to 140 °F)

Warranty

Sensor ...................................... 3 years from date of

manufacture

Cap ........................................... 2 years from date of

manufacture or 2 years from

fi rst reading, whichever comes

fi rst

Standards and Approvals

CE
RoHS Compliant

China RoHS (Go to www.gfsignet.com for details)

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.

Signet 2610 Process Optical Dissolved Oxygen Sensor

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