PD685
intrinsically safe, NEMA 4, type 4X, iP67 Loop-Powered Meter
www.predig.com
2
Enclosure:
Impact-resistant, glass-filled, polycarbonate body,
opaque; Impact-resistant, polycarbonate cover, transparent;
Polyurethane/polymer gasket; Polyamide/plastic cover screws;
NEMA 4, IP67
Connections:
Removable screw terminal block, 12 to 24 AWG.
Conduit Hole:
One ½" conduit hole may be provided; refer to
Ordering Information to specify hole location; request model (-Z)
for no conduit hole.
Weight:
12 oz (340 g)
Warranty:
2 years parts & labor
COMPLiANCE iNFORMAtiON
Product Markings
The PD685 will carry the following
AtEX
and
iECEx
markings:
Ex ia IIC T4 Ga
Ex ia IIIC T135°C Da
-40°C ≤ Ta ≤ +75°C; IP67
The PD685 will carry the following
CsA
markings:
-40°C ≤ Ta ≤ +75°C
Ex ia IIC T4 Ga;
Ex ia IIIC T135°C Da;
Class I, Zone 0, AEx ia IIC T4 Ga;
Class I, Zone 20, AEx ia IIIC T135°C Da;
Class I, Division 1, Groups A, B, C and D, T4;
Class II, Division 1, Groups E, F and G, T135°C; Class III;
Class I, Division 2, Groups A, B, C and D, T6;
Class II, Division 2, Groups F and G, T85°C; Class III;
Type 4X; IP67
AtEX and iECEx special Conditions for safe Use
For European Community:
The PD685 must be installed in
accordance with the Essential Health & Safety Requirements of
Directive 2014/34/EU, the product certificates CML 17ATEX2113X
and IECEx CML 17.0052X, and the product manual.
Under certain extreme circumstances, the non-metallic parts
incorporated in the enclosure of this equipment may generate
an ignition-capable level of electrostatic charge. Therefore, the
equipment shall not be installed in a location where the external
conditions are conducive to the build-up of electrostatic charge
on such surfaces. This is particularly important if the equipment is
installed in a zone 0 location. In addition, the equipment shall only
be cleaned with a damp cloth.
The cable entry into the enclosure shall be by means of conduit or
cable gland and shall provide a minimum degree of protection of IP5X.
CsA special Conditions for safe Use
For North American Community:
Installation and service of this
device and or associated apparatus (barrier) should be performed
only by trained service personnel, and must be in accordance with the
manufacturer’s control drawing, Article 504 of the National Electric Code
(ANSI/NFPA 70) for installation in the United States, or Section 18 of the
Canadian Electrical Code for installations in Canada.
Under certain extreme circumstances, the non-metallic parts
incorporated in the enclosure of this equipment may generate an
ignition-capable level of electrostatic charge. Therefore, the equipment
shall not be installed in a location where the external conditions are
conducive to the build-up of electrostatic charge on such surfaces. This
is particularly important if the equipment is installed in a zone 0 location.
In addition, the equipment shall only be cleaned with a damp cloth.
Control equipment must not use or generate more than 250 V rms or dc
with respect to earth.
Conduit hubs and cable glands shall maintain the degree of protection,
explosion protection, and environmental rating of the PD685, and
installed in accordance with the appropriate wiring method for Class I
Division 2 and Class II Division 2 locations. Wire shall be used that is
rated for a minimum temperature of 80°C.
PD685 must be installed with a certified barrier for Class II, Division 1
locations.
0518
II 1 GD
OVERViEW
The PD685 is an easy to use, loop-powered indicator, certified by
CSA, ATEX and IECEx as intrinsically safe. The PD685 carries
international certifications under both the Class/Division System
and Zone System, and is thereby suitable for use in gas and dust
hazardous areas worldwide. For Division 2 applications where
intrinsically safe interfaces are not needed, the PD685 is able to
be installed without barriers! To achieve this ability, the PD685
underwent a special 'nonarcing assessment' under the UL 121201
and CSA C22.2 No. 213 standards, and was determined to be a
device incapable of causing an ignition on its own. The PD685 is well-
suited for both indoor and outdoor applications and carries a variety of
environmental ratings, including NEMA 4, Type 4X and IP67.
The PD685 can be seen from considerable distance in bright sunlight
or dimly lit areas when the standard backlight feature is activated. The
fact that this meter is loop-powered means that there is no need to
run additional, costly power lines into a hazardous area. The meter
gets all of the power it needs from the 4-20 mA loop and its 1 V (4
V with backlight) drop results in a minimal burden on the loop. The
meter features a wide -40 to 75°C operating temperature range and
is available with a ½" conduit hole in a location of your choice for
easy installation. Calibration is a quick two-step process involving
the adjustment of only two sets of coarse and fine, non-interacting
potentiometers.
sPECiFiCAtiONs
Except where noted all specifications apply to operation at +25°C.
input:
4-20 mA @ 30 VDC maximum
Display:
1.1" (28 mm) LCD, 3½ digits; -1999 to +1999
Backlight:
Powered by 4-20 mA loop. Intensity varies with signal level
Accuracy:
±0.1% FS ±1 count
Approvals:
AtEX and iECEx:
Certified as intrinsically safe with entity, for use in Equipment
Group II, categories 1G (for Gas) and 1D (for Dust), suitable
for Zone 0, 1 & 2 (for Gas) and Zone 20, 21 & 22 (for Dust)
classified areas, and carrying the following markings:
II 1 GD. Ex ia IIC T4 Ga. Ex ia IIIC T135°C Da. -40°C ≤ Ta ≤ +75°C.
CsA:
Certified as intrinsically safe with entity, to U.S. and Canadian
standards for Divisions and Zones (Gas and Dust), and
carrying the following markings:
Ex ia IIC T4 Ga; Ex ia IIIC T135°C Da; (Canada only)
Class I, Zone 0, AEx ia IIC T4 Ga; Zone 20, AEx ia IIIC
T135°C Da; (U.S. only)
Class I, Division 1, Groups A, B, C and D, T4;
Class II, Division 1, Groups E, F and G, T135°C;
Class III; Type 4X; IP67;
-40°C ≤ Ta ≤ 75°C
Certified as suitable for Division 2 without barriers, to U.S. and
Canadian Standards, and carrying the following markings:
Class I, Division 2, Groups A, B, C and D, T6;
Class II, Division 2, Groups F and G, T85°C;
Class III; Type 4X; IP67;
-40°C ≤ Ta ≤ 75°C
Entity Parameters:
Ui = 30 V, Ii = 175 mA, Pi = 1 W, Ci = 0, Li = 0
Decimal Point:
User selectable via J2 jumper
Calibration:
4-step coarse & fine control; non-interacting zero & span
Calibration Range:
4 mA input: -1000 to +1000;
20 mA input: between 20 and 2000 counts > 4 mA display
Display Update Rate:
2.5/second
Maximum input Current:
30 mA
input Overload Protection:
Over voltage protection to 30 V max
(between S+ and S-)
Maximum Voltage Drop:
1 V @ 20 mA (4 V @ 20 mA with backlight)
Operating temperature:
-40 to 75°C
storage temperature:
-40 to 85°C
Relative Humidity:
0 to 90% non-condensing. Printed circuit
boards are conformally coated.
C US
