YOKOGAWA YPP6870 User manual

2 Dart Road • Newnan, Georgia 30265
770-253-7000 • 800-888-6400
Fax: [phone] • www.yokogawa-usa.com
YPP6870 EXPLOSION-PROOF
LOOP-POWERED PROCESS METER
•4-20 mA input
•1 V drop (4 V with Backlight)
•3½ Digits LCD, 1" High
•Loop-Powered Backlight Option
•HART®Protocol Transparent
•Explosion-Proof, IP68, NEMA 4X Enclosure
•Flanges for Wall or Pipe Mounting
•Easy Calibration and Installation
•Operates from -40 to 75°C

YPP6870 Loop-Powered Process Meter Instruction Manual
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Disclaimer
The information contained in this document is subject to change without notice.
Yokogawa makes no representations or warranties with respect to the contents
phereof; and specifically disclaims any implied warranties of merchantability or fitness
for a particular purpose.
!
CAUTION: Read complete
instructions prior to installation
and operation of the meter.
WARNING: Risk of
electric shock or
personal injury.
WARNINGS
• This product is not recommended for life support applications or applications
where malfunctioning could result in personal injury or property loss. Anyone
using this product for such applications does so at his/her own risk.
Yokogawa Corporation of America shall not be held liable for damages
resulting from such improper use.
• Failure to follow installation guidelines could result in death or serious injury.
Make sure only qualified personnel perform the installation.
• Never remove the meter cover in explosive environments when the circuit is
live.
• Cover must be fully engaged to meet flameproof/explosion-proof requirements.
Limited Warranty
Yokogawa Corporation of America warrants this product against defects in material
or workmanship for the specified period under “Specifications” from the date of
shipment from the factory. Yokogawa’s liability under this limited warranty shall not
exceed the purchase value, repair, or replacement of the defective unit.
Registered Trademarks
All trademarks mentioned in this document are the property of their respective
owners.
© 2013 Yokogawa Corporation of America. All rights reserved.
www.yokogawa-usa.com

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INTRODUCTION
The YPP6870 is a rugged, loop-powered meter with 1" display digits in an explosion-
proof enclosure for demanding applications in hazardous areas or in the harshest
environmental conditions. The meter derives all of its power from the 4-20 mA loop
with a small 1 volt drop for easy installation in almost any system.
It is programmed using four easy to access front-mounted control dials with no
complex or difficult to read programming menus necessary for setup. The numeric
display will read from -1999 to 1999 over a 2000 count user adjustable scaling span.
The backlight option lets you see the display under any lighting condition and is
powered from the 4-20 mA loop with no additional power supply required.
The enclosure is provided with two threaded conduit holes and integrated pipe or wall
mounting slotted flanges.
ORDERING INFORMATION
Model
Description
YPP6870-0L0 Explosion-Proof Loop-Powered Process Meter
YPP6870-0K0 Explosion-Proof Loop-Powered Process Meter
with Backlight

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Table of Contents
INTRODUCTION---------------------------------------------------------------------- 3
ORDERING INFORMATION------------------------------------------------------- 3
SPECIFICATIONS-------------------------------------------------------------------- 5
General -------------------------------------------------------------------------------------------5
Input-----------------------------------------------------------------------------------------------6
Product Ratings and Approvals ---------------------------------------------------------7
Electromagnetic Compatibility-----------------------------------------------------------8
SAFETY INFORMATION ----------------------------------------------------------- 8
INSTALLATION----------------------------------------------------------------------- 9
Unpacking------------------------------------------------------------------------------------- 10
Pre-Installed Conduit Plug--------------------------------------------------------------- 10
Mounting--------------------------------------------------------------------------------------- 10
Cover Jam Screw --------------------------------------------------------------------------- 10
Connections---------------------------------------------------------------------------------- 11
Connections & Wiring Diagrams...............................................................12
SETUP----------------------------------------------------------------------------------13
Scaling Controls and Display----------------------------------------------------------- 13
Setting Up the Meter----------------------------------------------------------------------- 14
Calibrating the Meter................................................................................14
Setting the Decimal Point.........................................................................14
Factory Defaults & User Settings ----------------------------------------------------- 15
TROUBLESHOOTING -------------------------------------------------------------16
Troubleshooting Tips---------------------------------------------------------------------- 16
MOUNTING DIMENSIONS--------------------------------------------------------17
EC DECLARATION OF CONFORMITY---------------------------------------19
Table of Figures
Figure 1. YPP6870 Connectors...............................................................11
Figure 2. YPP6870 Input Connections without Backlight.....................12
Figure 3. YPP6870 Input Connections with Loop-Powered Backlight.12
Figure 4. Enclosure Dimensions – Front View ......................................17
Figure 5. Enclosure Dimensions – Side Cross Section View...............18

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SPECIFICATIONS
Except where noted all specifications apply to operation at +25°C.
General
DISPLAY 3 ½ digit LCD
1" (25.4 mm); -1999 to 1999
DISPLAY
UPDATE RATE 2.5 Updates/Second
OVERRANGE Display reads 1 on the left most digit
PROGRAMMING
METHOD Four front mounted rotary control dials accessed when the
cover is removed.
RECALIBRATION Recalibration is recommended at least every 12 months.
NORMAL MODE
REJECTION 60 dB rejection ratio
ENVIRONMENTAL Operating temperature range: -40 to 75°C
Storage temperature range: -40 to 75°C
Relative humidity: 0 to 90% non-condensing
CONNECTIONS Screw terminals accept 12 to 22 AWG wire
ENCLOSURE
Explosion-proof die cast aluminum with glass window, 0.30%
max copper content, corrosion resistant epoxy coating, color:
green. NEMA 4X, IP68.
Two ¾" NPT threaded conduit openings. One ¾" NPT nickel
plated brass conduit plug with 10 mm hex key fitting installed.
MOUNTING May be mounted directly to conduit. Two slotted flanges for
wall mounting or NPS 1½" to 2½" or DN 40 to 65 mm pipe
mounting. See Mounting Dimensions on page 17.
OVERALL
DIMENSIONS 5.65" x 5.25" x 4.86"
(144 mm x 133 mm x 124 mm) (W x H x D)
WEIGHT 5.00 lbs (80 oz, 2.27 kg)
WARRANTY 3 years parts and labor

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Input
ACCURACY ±0.1% of full span ±1 count
TEMPERATURE
DRIFT 150 PPM/°C from -40 to 75°C ambient
DECIMAL POINT User selectable decimal point
CALIBRATION
RANGE 4 mA input: -1000 to +1000; 20 mA between 20 and 2000
counts greater than 4 mA display.
Two point linear display span.
MAXIMUM
VOLTAGE DROP Without Backlight With Loop-Powered Backlight
1 VDC @ 20 mA 4 VDC @ 20 mA
EQUIVALENT
RESISTANCE 50 Ω @ 20 mA 200 Ω @ 20 mA
INPUT
OVERLOAD Over current protection to 2 A max.

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Product Ratings and Approvals
FM Class I, Division 1, Groups B, C, D
Class II, Division 1, Groups E, F, G
Class III, Division 1; T6
Class I, Zone 1, AEx d IIC T6 Gb
Zone 21, AEx tb IIIC T85°C
Ta = -40°C to +75°C
Enclosure: Type 4X & IP66
Certificate number: 3048884
ATEX II 2 G D
Ex d IIC T6 Gb
Ex tb IIIC T85°C Db IP68
Ta = -40°C to +75°C
ATEX Certificate: Sira 13ATEX1121X
CSA
Class I, Division 1, Groups B, C, D
Class II, Division 1, Groups E, F, G
Class III, Division 1; T6
Class I, Zone 1, Ex d IIC T6
Ta = -40°C to +75°C
Enclosure: Type 4X & IP66
Certificate number: 2605742
IECEx
Ex d IIC T6 Gb
Ex tb IIIC T85°C Db IP68
Ta = -40°C to +75°C
Certificate number: IECEx SIR 13.0042X
Special Conditions for Safe Use:
Use suitably certified and dimensioned cable entry device and/or plug. The
equipment shall be installed such that the supply cable is protected from mechanical
damage. The cable shall not be subjected to tension or torque. If the cable is to be
terminated within an explosive atmosphere, then appropriate protection of the free
end of the cable shall be provided.
Year of Construction
This information is contained within the serial number with the first four digits
representing the year and month in the YYMM format.
For European Community: The YPP6870 must be installed in accordance with the
ATEX directive 94/9/EC, and the product certificate Sira 13ATEX1121X.

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Electromagnetic Compatibility
EMISSIONS
EN 61326:2006
Safety requirements for measurement, control, and
laboratory use – Industrial
Group 1 Class A ISM emissions requirements
Radiated
Emissions Class A
IMMUNITY
EN 61326:2006
Safety requirements for measurement, control, and
laboratory use
ESD ±4 kV contact,
±8 kV air
RFI – Amplitude
Modulated 80-1000 MHz @ 10 V/m,
1.4-2.0 GHz @ 3 V/m,
2.0-2.7 GHz @ 1 V/m,
80% AM (1 kHz)
EFT ±2 kV DC mains, ±1 kV other
Telco Surge ±1 kV
CRFI 3 V, 0.15-80 MHz, 1 kHz 80% AM
SAFETY INFORMATION
WARNINGS
•Read complete instructions prior to installation and operation of the meter.
•Installation and service should be performed only by trained service
personnel. Service requiring replacement of internal components must be
performed at the factory.
•Disconnect from supply before opening enclosure. Keep cover tight while
circuits are alive. Conduit seals must be installed within 18" (450mm) of
the enclosure.
•Verify that the operating atmosphere of the meter is consistent with the
appropriate hazardous locations certifications.
•If the meter is installed in a high voltage environment and a fault or
installation error occurs, high voltage may be present on any lead.

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INSTALLATION
For Installation in USA: The YPP6870 must be installed in accordance with the
National Electrical Code (NEC) NFPA 70.
For Installation in Canada: Install in accordance with applicable local and national
regulations (e.g. NEC). The YPP6870 must be installed in accordance with the
Canadian Electrical Code CSA 22.1. All input circuits must be derived from a CSA
approved Class 2 source.
For European Community: The YPP6870 must be installed in accordance with the
ATEX directive 94/9/EC and the product certificate Sira 13ATEX1121X.
All controls and wiring connectors are accessed by opening the enclosure. To access
electrical connectors, remove the 2 captive screws and remove the display module
from the enclosure.
WARNING
Disconnect from supply before opening enclosure. Keep cover
tight while circuits are alive. Conduit seals must be installed within
18" (450mm) of the enclosure.

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Unpacking
Remove the meter from box. Inspect the packaging and contents for damage. Report
damages, if any, to the carrier.
If any part is missing or the meter malfunctions, please contact your supplier or the
factory for assistance.
Pre-Installed Conduit Plug
The YPP6870 is supplied with one pre-installed optional conduit plug for installations
that do not require the use of both conduit entries. The conduit plug includes an
internal hexagonal socket recess for removal. The pre-installed plug and installation
is included in all hazardous area approvals of the YPP6870.
WARNING
Installations of the supplied conduit plug require the application of
non-setting (solvent free) thread sealant. If the pre-installed conduit
plug is removed or replaced all relevant hazardous area guidelines
must be followed for its installation or replacement conduit.
Mounting
The YPP6870 has two slotted mounting flanges that may be used for pipe mounting
or wall mounting. Alternatively, the unit may be supported by the conduit using the
conduit holes provided.
Refer to Mounting Dimensions, page 17 for details.
WARNING
Do not attempt to loosen or remove flange bolts while the meter is
in service.
Cover Jam Screw
The cover jam screw should be properly installed once the meter has been wired and
tested in a safe environment. The cover jam screw is intended to prevent the removal
of the meter cover in a flameproof environment without the use of tools. Using a M2
hex wrench, turn the screw clockwise until the screw contacts the meter. Turn the
screw an additional 1/4 to 1/2 turn to secure the cover. Caution: Excess torque may
damage the threads and/or wrench.