GF Signet 2650 User Manual

Signet 2650 DryLoc® Amperometric Electronics

English

3-2650.090

3-2650.090 Rev. F 05/11 English

CAUTION!

• Remove power before wiring input or output connections.

• Follow instructions carefully to avoid personal injury or damage
to the electronics.

1. Description

The Signet 2650 Amperometric Electronics provide the polarization voltage and signal conditioning required by all Signet
Amperometric Sensors. Sophisticated circuitry makes system setup and verifi cation easy.

Features:

• Passes data stored in sensor memory, such as factory calibration data, service time, range and more.

• Signet's patented DryLoc® connector provides quick assembly and a secure connection. Gold-plated contacts and an O-ring seal
ensure a waterproof and reliable interconnect to the sensor.

• Separate drive electronics from sensor make for easy sensor replacement without running new cable.

• DryLoc connectivity allows easy sensor removal for calibration.

2. Installation - Tee Fitting

4630 Flow Cell Installation

Insert sensor fully into fi tting. Align

1

tab on sensor with notch on fi tting.
Lubricate O-rings with a viscous,

non-petroleum based lubricant
(grease) compatible with the

3

2

system.

Install the yellow nut on to the fi tting

2

and hand tighten. Do Not Use Tools.

The bottom yellow nut is
not used when using the 2650
electronics with the Signet 4630
fl ow cell.

Signet 4630
fl ow cell

1

Align the 2650 Electronics with

3

the pins on the sensor. Engage
it by gently turning the lock ring
¼-turn counter-clockwise.

Do Not Use Lubricant or Sealing Tape on Threads.

Do Not Overtighten.

CHEMICAL COMPATIBILITY WARNING

The retaining nuts of Amperometric sensors are not designed for prolonged contact with aggressive substances. Strong
acids, caustic substances and solvents or their vapor may lead to failure of the retaining nut, ejection of the sensor and
loss of the process fl uid with possibly serious consequences, such as damage to equipment and serious personal injury.
Retaining nuts that may have been in contact with such substances, e.g. due to leakage or spilling, must be replaced.

3. Wiring
Chlorine Digital (S

• Remove approximately 10 mm (0.4 in.) of insulation and tin each conductor before inserting into terminals.

• Refer to the wiring diagram above to connect the 2650 cable to the terminals on the
8630 Chlorine Transmitter.

• Maximum cable length is 30 m (100 ft).

• Cable should have noise immunity for the sensor signal of up to 30 m (100 ft).

• Cable capacitance must be less than 30 pF/foot.

3

L) Wiring

White

Red

Black

Shield

Signal Ground

Digital (S3L) data

+5 VDC

15
14
13

Gnd

I/O

V

+

4. Technical Data Signet 2650 DryLoc Amperometric Electronics

General

Compatible Sensors:

All Signet Amperometric DryLoc Sensors

Compatible Instruments:

Signet 3-8630-3P Chlorine Transmitter

Mounting:

DryLoc connection

Materials:

®

Valox

(PBT)

Cable:

4.6 m (15 ft) 3 conductor shielded, 22 AWG

Shipping Weight:

0.64 kg (1.14 lb)

Performance

Electronics Accuracy:

< 5 nA or 1% of reading, whichever is greater

@ 25 °C over full input range

Temperature:

± 1.0 °C (PT1000) over full operation range
(when calibrated at ambient temperature)

System Response:

500 ms (update rate)

Operational Range:

± 450 mV

Resolution:

0.1 nA

* Valox® is a registered trademark of SABIC Innovative Plastics

Electrical

Input Specifi cations:

Sensor: Raw signal
Temperature: PT1000 RTD

Output Specifi cations:

Digital (S

3

L):
Serial ASCII, TTL level 9600 bps
Maximum Cable Length:
30 m (100 ft)

Power Supply Input:

Digital (S

3

L) mode:

5 to 6.5 V ± 10% , 3 mA max

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 (no electrode connected)

Enclosure Requirements:

NEMA 4X/IP65 with electrode connected

Standards and Approvals

CE
Manufactured under ISO 9001 and ISO 14001
China RoHS (Go to www.gfsignet.com for details)

Dimensions

35.0 mm
(1.38 in.)

101 mm
(4.0 in.)

61.0 mm
(2.40 in.)

Georg Fischer Signet LLC, 3401 Aerojet Avenue, El Monte, CA 91731-2882 U.S.A. • Tel. [phone] • Fax [phone]
For Worldwide Sales and Service, visit our website: www.gfsignet.com • Or call (in the U.S.): [phone]
For the most up-to-date information, please refer to our website at www.gfsignet.com

3-2650.090 Rev. F 05/11 English © Georg Fischer Signet LLC 2011