NS P50 User manual

22 September 2015 P50 Product Manual
P50
Environmental Monitor
Version 4.7

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TABLE OF CONTENTS
INTRODUCTION 3
WARRANTY 4
BEST INSTALLATION PRACTICE 5
SAFETY INFORMATION 8
SENSORS 8
MODELS 13
APPROVALS 14
ELECTRICAL SPECIFICATIONS 15
COMMUNICATIONS 17
MAINTENANCE PROCEDURES 21
FAULT FINDING 24
TERMS AND CONDITIONS 25
ANNEXURE A 26
RISK ASSESSMENT INTRODUCTION 28
RISK IDENTIFICATION 29
STANDARDS AND COMPLIANCE 29
IDENTIFIED REGULATORY RISK 30
HAZARD IDENTIFICATION 31
DATA ANALYSIS 31
INCIDENT INVESTIGATION 32

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Manufactured and Distributed b :
Ningi
22 Langa Crescent
Corridor Hill
Witbank, MP
1035
South Africa
Phone [phone]
Fax [phone]
Sales : [email protected]
Queries: [email protected]
Website: www.ningi.com
Technical Support: [email protected]

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INTRODUCTION
Purpose
The purpose of this manual is to provide the user with a comprehensive guide to
understanding the use, set-up, and the configuration of the P50 Environmental
Monitor to enable the user to obtain best results from the P50.
About
The P50 is a state of the art Environmental Monitor which offers multiple environmental
monitoring sensors and utilizes the ver latest in intelligent technolog to achieve
excellent accurac and is approved and certified compliant for use in explosive
atmospheres (Group I) Underground mines and (Group II) Surface
Sensors
The following sensors are available in configuration on the P50 and can be specificall
setup to operate in var ing environmental climates depending on our requirements;
•Air Velocit
•Methane(CH4)
•Carbon Monoxide(CO)
•Carbon Dioxide(CO2)
•Ox gen(O2)
•Barometric Pressure
•Humidit
•Ambient Temperature
•Volatile Organic Compounds(VOC)
•H drogen sulphide (H2S)
•H drogen (H2)
•Smoke (MOS) (NOT Recommended)
**Although the P50 can be fitted with a MOS sensor we do not recommend this options
for the P50, we therefor recommend a dedicated MOS sensor such as our S16 monitor.
The P50 is South African manufactured and is certified to the International Standards
and Compliance IEC (SANS) 10086-2:2006.

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HMI
The P50 operates as a user friendl device with real time data available to the user. All
the measurements and data are available on the 16x2 OLED displa , audio/visual
indicator and RS485 network. All parameters are adjustable via personal computer.
Modbus RTU is standard on all devices which allow communication to the control room.
Audio
The P50 uses a 93dB audible device configured to sound at pre-set alarm levels
depending on the customer’s requirements.
Visual
The visual indication is visible 360° around the unit. Four colours, red, green, ellow and
blue, are standard on all models. Red and green are default for alarm and no alarm
conditions respectivel . Alarms can however be mapped to an of the four colours.
WARRANTY
The P50 carries a one ear limited warrant on all parts and labour.

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BEST INSTALLATION PRACTICE
This section of the manual is intended as a guideline nly for the installation of the P50
environmental sensor as shown in a t pical underground operation.
This guideline does not supersede local authorit or rules for our environment as
installations are required to be approved b the authoritative person responsible for the
ventilation/environmental monitoring where the device is to be located.
Figure 1 – A typical mine installation – Roof Position
The P50 should be installed as illustrated above, that it is correctl positioned from the
roof in order to measure the air velocit and should not be hung in a roof cavit as this
will cause inaccurate readings due to improper flow or air.

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Figure 2 – Path Position
The P50 should not be mounted to close to either side of the ventilation path, or where
cross flows could influence the reading.
Figure 3 – Installation Attitude
When the P50 is hung it should be hung as level as possible.

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Figure 4 – Directional Position
For optimal Velocit readings the P50 should be positioned ensuring the Sensor
indicated is positioned in the airflow
Air Flow
Sensor to remain in
the airflow
Air Flow

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SAFETY INFORMATION
• Onl a certified electrician is allowed to carr out the electrical installation
• Dangerous voltages can occur on the connectors, even if the auxiliar voltage has
been disconnected
• Breaking the seal on the fixing screws of the device will result in a loss of
warrant
• Electrical safet regulations must alwa s be followed
SENSORS
Air Velocit
Two embedded platinum sensors are used to ensure long term reliable operation in harsh
conditions. Digital signal processing ensures accurate air velocit measurements over the
full specified temperature range.
Specifications
•Sensor range 0 to 5 m/s
•Operating range 0 to 5 m/s (T pe A Model)
•Operating range 0 to 10 m/s (T pe B Model)
•Operating temperature range -10°C to 50°C
•Response time 30 sec
Methane (CH4) P50
High qualit sensors are used to ensure long term reliabilit and accurate measurements.
The sensor has an effective range of 0 to 100%, but to ensure a better resolution the CH4
sensor is optimized to measure a range of 0 to 5%.
Specifications
•Sensor Range 0 to 100%
•Operating range 0 to 5%
•Operating temperature range -20°C to 50°C
•Response time < 20 sec

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Methane (CH4) P51
High qualit sensors are used to ensure long term reliabilit and accurate measurements.
The sensor has an effective range of 0 to 1000000ppm, but to ensure a better resolution
the CH4 sensor is optimized to measure a range of 0 to 50000ppm.
Specifications
•Sensor Range 0 to 1000000ppm
•Operating range 0 to 50000ppm
•Operating temperature range -20°C to 50°C
•Response time < 20 sec
Carbon Monoxide (CO)
The CO sensor offers low drift long term stabilit with fast response. To allow for better
resolution the CO sensor is set to measure from 0 to 1 000 ppm.
Specifications
•Sensor range 0 to 2 000ppm
•Operating range 0 to 1 000ppm
•Operating temperature range -20°C to 55°C
•Response time <10 sec
Carbon Dioxide (CO2)
The NDIR (Non Dispersive Infra-red) CO2 sensor technolog offers long term accurate
and fast response for CO2 detection.
Specifications
•Sensor range 0 to 50 000ppm
•Operating range 0 to 50 000ppm
•Operating temperature range -20°C to 50°C
•Response time < 35sec

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Ox gen (O2)
The ox gen sensor measures the full range accuratel and consistentl
Specifications
•Sensor range 0 to 30%
•Operating range 0 % to 30%
•Operating temperature range -20°C to 50°C
•Response time < 15 sec
Barometric pressure
A high accurac pressure sensor is used to measure absolute barometric pressure.
Specifications
•Sensor range 300 to 1100mB
•Operating range 300 to 1000mB
•Operating temperature range -20°C to 80°C
•Response time 60 sec
Humidit
The humidit sensor has long term stabilit measuring in a range of 0 to 100% RH
(Normal Operating Range and is condensation resistant)
Specifications
•Sensor range 0 to 100%RH
•Normal Operating range 0 to 100%RH
•Normal Operating temperature range -40°C to125°C
•Response time 8 sec
•Accurac 10-90%RH@+/-1.7%RH

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Ambient temperature
The ambient temperature sensor has long term stabilit measuring in a range of
0 to 100% RH (Normal Operating Range and is condensation resistant)
Specifications
•Sensor range -40°C to 125°C
•Normal Operating range 20°C to 60°C
•Operating temperature range -40°C to 125°C
•Response time 30 sec
•Accurac 5°C – 50°C @+/-0.3%°C
Volatile Organic Compound (VOC)
VOC’s are measured utilizing Photo Ionization technolog , allowing for accurate
repeatable measurements
Specifications
•Sensor range 100ppm to 6000 ppm
•Operating range 100ppm to 500 ppm
•Operating temperature range -40°C to 55°C
•Response time 5 sec
H drogen Sulphide (H2S)
High qualit sensors are used to ensure long term reliabilit and accurate measurements.
The sensor has an effective range of 0 to 100ppm.
Specifications
•Sensor Range 0 to 100ppm
•Operating range 0 to 100ppm
•Operating temperature range -20°C to 50°C
•Response time < 20 sec

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H drogen (H2)
High qualit sensors are used to ensure long term reliabilit and accurate measurements.
The sensor has an effective range of 0 to 1000ppm.
Specifications
•Sensor Range 0 to 1000ppm
•Operating range 0 to 1000ppm
•Operating temperature range -20°C to 50°C
•Response time < 20 sec
Smoke (MOS)
High qualit sensors are used to ensure long term reliabilit and accurate measurements.
The sensor has an effective range of 0 to 100%.
Specifications
•Sensor Range 0 to 100%
•Operating range 0 to 100%
•Operating temperature range -20°C to 50°C
•Response time < 20 sec
**Note 1: Sensor range refers to the actual; range that the sensor has been utilized for.
Operating range refers to the range that the unit has been calibrated to, this allows for
the unit to more accuratel measure in the calibrated range**.

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MODELS
Intrinsic safe Ex ia
The P50 is approved for use in hazardous locations including underground mines.
The operating voltage range is 9 to 20VDC powered from an intrinsic safe power suppl .
Non-intrinsic safe
The P50 is also available as a non-intrinsic safe version* for use in non-hazardous
locations.
The non-intrinsic safe version is available with an operating voltage range of 9 to 48VDC
or 115/240VAC.
* See ordering information
Batter Backup
All models include batter backup to ensure operation in case of a power failure. The
backup batter is maintenance free and is automaticall charged when connected to the
suppl line.
Power Off
In order to save batter power the P50 will shut down when the external power is
removed and the P50 unit is placed upside down. The P50 will resume normal operation
when the external power is restored regardless of the orientation of the P50.
Ordering information
Model
Intrinsic safe
Operating Voltage
Part No
P50 Ex ia
Yes
9 to 20VDC
P50ExiaM10
P50 non
-
IS
No
9 to 48VDC
P50nonExiaM20
P50 Mains
No
85 to 265VAC
P50MainsM30

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APPROVALS
Marking:
T pe: P50 Sensor
Ex rating: Ex ia 1 (-20°C to +50°C)
IA No: MASC M/11-437X
Serial No: (See validit of report)
Ingress Protection: IP65
Safet Parameters:
Connector P5
Ui = 18V Li =0
Ii = 3A Ci =0
Pin 3 w.r.t 4
Ui = 18V
Uo = 5.88V
Ci = Neglected
Po = 20mW
Co = 1000uF @ 5.88V
Io = 13.7mA
Lo = 2.48H

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ELECTRICAL SPECIFICATIONS
Description
Min
Nom
Max
Unit
Operating voltage Exia
9
12
18
VDC
Operating Voltage non IS
9
12/24
48
VDC
Operating Voltage Mains
85
115/240
265
VAC
Current Consumption
95
180
350
mA
Batter Backup
4
6
8
hours
Batter capacit
2200
2200
4400
mAh
Batter Voltage
3.6
3.7
4.2
VDC
RS485 baud rate
2400
9600
57600
Bps
Local alarm
93
dB
Rela Contacts P50
220V
95
220
250
VAC
Rela Contacts P50
220V
2
A
Rela Contacts P50 Exia
9
12
18
VCD(Ex)
Rela Contacts
2
A (Ex)
Connections
P5 0-EXIA
Gre Cable
Ningi Cable
0V
Yellow
Blue
12V
1
Red
RS485 A/+
2
Green
RS485 B/
-
3
Orange
COM 1
4
Purple
N/O 1
5
Purple
COM 2
6
Gre
N/O 2
7
Gre

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220V
Gre Cable
Ningi Cable
220V Neutral
Yellow
Blue
220V Live
1
Red
RS485 A/+
2
Green
RS485 B/
-
3
Orange
COM 1
4
Purple
N/O 1
5
Purple
COM 2
6
Gre
N/O 2
7
Gre

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Input Registers 30 000 Coils 10 000
COMMUNICATIONS
The P50 utilises an Isolated RS485 communication setup standard on all models. The
Modbus RTU protocol is used for all real time data and configuration settings.
Modbus RTU
All sensor readings and configuration settings are available via the RS485 Modbus RTU
network. Some registers are password protected.
Register
Description
Min
Max
00033
Slave reset
0
1
00034
Default(Use with care)
0
1
00038
Set Time
0
1
00039
Save settings
0
1
Register
Description
Min
Max
Divide
Unit
30001
-
32
User defined
-
-
-
-
30049
1
CH4
0
50
10
%
30049
1
VOC
0
1000
1
ppm
30050
CO
0
10000
1
ppm
30050
2
H2S
0
100
1
ppm
30050
2
H2
0
1000
1
ppm
30051
Smoke(MOS)
0
1000
10
%
30053
O2
0
300
10
%
30059
CO2
0
50 000
1
ppm
30055
Barometric pressure
300
1100
1
mBar/hPa
30056
Suppl Voltage
0
400/2500
10
VDC
30062
Air Velocit
0
100
10
m/s
30063
Humidit
0
1000
10
%
30064
Ambient Temperature
0
80
°C
30115
Communication counter
0
255
-
Count
30116
Real time clock (high b te)
0
65535
-
Unix
30117
Real time clock (low b te)
0
65535
-
Unix

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1: 30049 is used for CH4 or for VOC dependent on the model being used.
2: 30050 is used for CO, H2S or H2 dependent on the model being used.
Alarm Trigger
Status Word Bit Conditions
Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8
- - - - - - - -
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
- CPU
Reset
RTC
Operation
Error
Watch
dog reset
RTC
Batter
Error
RTC
s nc
Error
RTC
Task
Error
Power
on reset
Register
Descripti n
30097
CH4
30098
CO
30099
MOS
30101
O2
30103
Baro
30104
Suppl
30107
CO2
30110
WS
30111
Hum
30112
Amb
30113
Status Word
The alarm triggers are hardware readable registers that allow for a SCADA
s stem to determine if the head has triggered an alarm condition. The alarm
trigger register is a bitwise register indicating if the P50 is in an alarm condition,
zero indicating no alarm condition. The alarm register bits are onl active when
the alarm levels has been set on the P50.

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Holding register 40 000 (P16 compatible mode)
Register
Descripti n
Min
Max
DEF
R/W
Unit
PW rd
40001
Air Velocit
0
100
R
m/s/10
-
40002
CH4/VOC
0
50
R
%/10
-
40003
CO
0
1000
R
ppm
-
40004
Vin (Suppl Voltage)
0
400
R
VDC/10
-
40005
Ambient Temperature
0
80
R
°C
-
40009
Mode
0
65535
R
-
-
40010
WS Alarm
0
100
10
R
m/s/10
-
40011
WS Dela
0
9999
30
R
Sec/10
-
40012
CH4/VOC Alarm
0
50
14
R
%/10
-
40013
CH4/VOC Dela
0
9999
30
R
Sec/10
-
40014
CO Alarm
0
1000
130
R
ppm
-
40015
CO Dela
0
9999
30
R
Sec/10
-
40016
Power Down Dela
0
9999
240
R
Min
-
40017
Address
0
247
247
R
-
-
40018
Baud Rate
9600
9600
9600
R
bps
-
40019
Parit
0
0
0
R
-
-
40020
ID 4
0
65535
-
R
-
-
40021
ID 3
0
65535
-
R
-
-
40022
ID 2
0
65535
-
R
-
-
40023
ID 1
0
65535
-
R
-
-
40024
S stem
0
65535
-
R
-
-
40025
Comms Counter
0
255
0
R
Sec
-
40026
CO Raw
0
4096
-
R
-
-
40027
CH4/VOC Raw
0
4096
-
R
-
-
40028
WS Raw
0
4096
-
R
-
-
40029
Barometric pressure
300
1100
-
R
mBar/hPa
-