Ashcroft ZT11-DQ Інструкція з монтажу та обслуговування - Сторінка 5

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Installation and Maintenance Instructions for

ZX11 Non-Sparking High Purity Transmitter

connected device's internal resistance with-

in its rated range.

•

When soldering, take care that the soldering

iron does not touch the sheath of the case

CAUTION:

or cable.

•

Product protection class IP67 may be

impaired if the tightening nut for the cable to

the M12 connector (optional) proves insuffi-

cient. Be sure to tighten securely to counter

possible vibration; tightening torque: 3.54 to

4.43 in. lb.

Do not

not perform any wiring procedures

when powering the unit.

6.3 Specifications of the cable with M-12 connector

(optional)

If using a connector that has not been supplied by Ashcroft,

please make sure your connector meets the following

specifications.

CONNECTOR

PUR Cable (Oilproof)

TERMINAL ARRAY

Straight

L Type

(1) Zinc die-casting

(nickel-plated)

Material

(2) TPU (Green)

(3) PUR)

Cable Length (L)

2m or 5m

Conductor Cross

0.34mm

Section

Core Diameter

1.27mm

Including Insulation

External Cable

4.7mm

Diameter

* The protection structure of the cable with M-12 connector is protection class IP67

or higher in a mating state.

•

The cable is comprised of a 4-wire system

CAUTION:

(white, black, blue, brown), however, the

white and black wires are not used.

7. Principle of Operation

The transmitter's sensing diaphragm converts pressure to an

electrical signal by use of strain gages. The circuit is a full-

bridge system where the strain gages are positioned on all

four bridge sides and detect the amount of strain. An electrical

signal, in proportion to the strain amount, is then amplified to a

specific value by the electrical circuit and transmitted as direct

current output.

All sales subject to standard terms and conditions of sale. ZX11_Transducer_im_RevA_(I&M011-10278)_06-05-20

PVC Cable (Stainless Nut)

1) Stainless

(2) TPU (Black)

(3) PVC)

2m or 5m

(22AWG)

0.34mm

(22AWG)

1.52mm

5.2mm

Block diagram (4 to 20mA DC/2-wire system)

8. Zero and Span Calibration

1) Prior to powering the unit, double-check to make sure all

wires have been properly connected. Verify that voltage

and amperage ratings of the power supply and internal

resistance of the external adaptation equipment are within

the rated range of the instrument's load resistance. Lastly,

re-confirm that the pressure transmitter has been installed

within an operating environment that complies with the

explosion-proof specification.

(2) Zero adjustment can be performed once the unit has been

powered for a 15-minute warm-up period. Zero adjustment

can be performed by removing the rubber plug located at

the top of the enclosure. Refer to "9-2. Adjustment" (below)

to adjust properly.

Observe the following precautions

while operating:

• Do not apply any pressure above that refer-

enced on the product's label.

• Do not adjust wiring or insert/remove the

connector while the device is powered, as

this may damage the device and/or cause

CAUTION:

an electric shock. All wiring should be con-

nected in accordance to the product wiring

diagrams.

WARNING:

• If used with corrosive gas, it is highly

recommended that the pressure transmitter

be fully purged with nitrogen gas prior to

being removed for maintenance or other

servicing. Leaving corrosive gas within a

device will accelerate corrosion by forming

strong acid or alkaline substance generated

internally by moisture or oxygen within the

atmosphere.

9. Maintenance and Adjustment

9.1 Maintenace

Routine inspection should be conducted at least once every

6 months with device recalibration or zero adjustment being

performed as necessary. Product should only be inspected by

properly trained personnel.