Instruction Manual - JL Wingert Company

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(#14) ISO. • Use X1 gain selection. Silver (earth ground). Technical Notes: ... Electrodes: 2715. 2717. +GF+ SIGNET 2720 pH/ORP Preamplifier. ENGLISH.
+GF+ SIGNET 2720 pH/ORP Preamplifier 3-2720.090-1

ENGLISH

B-11/01 English

SAFETY INSTRUCTIONS FOR IN-LINE ELECTRODE INSTALLATION 1. Do not remove from pressurized lines. 2. Do not exceed maximum temperature/pressure specifications. 3. Wear safety goggles or face shield during installation/service. 4. Do not alter product construction. Failure to follow safety instructions may result in severe personal injury!

1. Wiring Preamplifier:

Brown Blue Green White Red Black pH Electrodes: 2714 2714-HF 2716 2716-DI

Preamplifier:

Silver (earth ground)

(mV Input) (Iso. Gnd)

4

ALARM 1

7

8

pH

10

(V-)

ALARM 2

14

Red

+GF+ SIGNET pH Electrodes: 2714 2714-HF 2716 2716-DI

White Blue

(#10) V+ (#11) V(#12) T+ (#13) Ain

pH CONTROLLER

RLY 3 RLY 4

MOD

RELAY

pH

White

mV

TEMP

Brown Blue

OUTPUT

(#14) ISO (#14) ISO

+GF+ SIGNET

• Use X1 gain selection

9030

(T+) (T-)

+GF+ SIGNET

Silver (earth ground)

Green

RLY 2

CAL

(Iso. Gnd) (V-) (V+)

8710

Red Black

RLY 1

ENTER

(mV Input)

ORP Electrodes: 2715 2717

Preamplifier:

Silver (earth ground)

Brown

Green White

ENTER

5700

Green

Black

12

0

(V+)

Red Black

pH Electrodes: 2714 2714-HF 2716 2716-DI

6

2

(T+) (T-)

ORP Electrodes: 2715 2717

Preamplifier:

Silver (earth ground)

Brown Blue

ORP Electrodes: 2715 2717

(#10) V+ (#11) VN/C N/C

ORP CONTROLLER RLY 1 RLY 2 RLY 3 RLY 4

(#14) ISO

• Use X1 gain selection

Type

Description

Type

Description

Plastic tees

• 0.5 to 4 in. • PVC or CPVC • Mounts via glue-on fittings

Carbon steel weld-on weldolets

• 2 to 4 in, use 1-7/16 in. hole in pipe • Remove insert before welding • Installed by certified welder only

• 2 to 4 in., use 1-7/16 in. hole in pipe • Align wedge arrows with saddle arrows during assembly.

Carbon steel threaded tees

• 0.5 to 2 in. • Mounts on threaded pipe ends

• 2 to 4 in., use 1-7/16 in. hole in pipe

Universal pipe adapter for large pipes, #P31515-OV200

• For existing pipe fittings 2 in. and up • External 1-1/4 inch NPT male threads

Consult your local +GF+ SIGNET distributor for additional fitting information.

RELAY

ORP

mV

OUTPUT

+GF+ SIGNET

2. +GF+ SIGNET Fittings

Iron strap-on saddles

MOD

CAL

(#13) Ain

Technical Notes: • Use 6-conductor shielded cable for cable extensions to 120 m (400 ft) • Shield must be maintained through cable splice

PVC saddles

ENTER

9040

3. Recommended Position Customer supplied: • 3/4 in. NPT nipple (male) • J-box • flex conduit

3/4 in. NPT OR ISO 7/1-Rc 3/4 female threads

Customer supplied: • 3/4 in. NPT threaded pipe (A) • J-box (B) • Flex conduit (C) • Quick release pipe clamp (D) • Tank flange (E)

C. B. D. A.

B. C. A.

0°

-60

°

E.

+60

2 in. min.

°

In-Line

Process pipe

Open tanks

• Vertical (0°) position optimum • 4 fps or less for max. performance and sensor life

Closed tanks

Caution: If liquid level is not constant, always ensure liquid contact with electrode tip

4. Installation Submersible Applications

In-line Applications

1

2

1

2

Sealant Preamplifier

Preamplifier

Customer  supplied pipe 3/4 in. NPT or ISO 7/1-Rc 3/4

A. O-ring lubricant recommended (factory applied)

C.

B. Align marks



#P31542 Sensor Cap  (purchased separately)

A. O-ring lubricant recommended (factory applied)

Hand  tighten only!

C.

B. Align marks

Sealant

Fitting inlet

3

Fill with 3 to 4 in. of sealant

Attach 3/4 in. watertight pipe to the top of the 2720. Secure the threaded connection to prevent any leakage. For additional defense against possible accumulation of condensation at the back seal area of the sensor, fill the lower 3 to 4 inches of conduit or extension pipe with a flexible sealant such as silicone.

5. Accessories

Part no.

Description

Material

Code

P31542

Sensor  cap

PP

198 801 630

1220-0021 1224-0021 1228-0021

Sensor O-ring, 2 required

Viton® EPR  Kalrez

198 801 186 198 820 006 198 820 007

CAUTION! When replacing O-rings, apply O-ring lubricant to sensor O-rings prior to preamplifier/electrode assembly. Unlubricated O-rings may score the preamplifier sealing surface.

6. Specifications +GF+ SIGNET 2720 pH/ORP Preamplifier Housing material: CPVC Compatible sensors: 2714 Flat Surface pH Electrode 2714-HF Flat Surface pH Electrode 2715 Flat Surface ORP Electrode 2716 Bulb pH Electrode 2716-DI Bulb pH Electrode 2717 Bulb ORP Electrode Input Impedance: >1011 Ω Operating temp.: 0 to 80 °C Gain: X1 (unity) Input power: ±4.5 to ±8 VDC, dual supply Current consumption: