Nic MA-3000 Manuale utente

Mercury Collection Tube Heating Furnace Unit

for MA-3000

RH-MA3

Instruction Manual

NIC-600-2208-04

Nippon Instruments Corporation

Instruction Manual MA-3000+RH-MA3 NIC-600-2208-04 
 
 
 Instruction Manual 
Mercury Collection Tube Heating Furnace Unit 
RH-MA3 
 
Contents 
INTRODUCTION............................................................................................................. 1 
1. Safety precautions................................................................................................... 1 
1.1. Meaning of safety alert symbols....................................................................... 1 
1.2. Installation precautions..................................................................................... 1 
1.3. Precautions with maintenance ......................................................................... 1 
SYSTEM OUTLINE......................................................................................................... 2 
1. Operation ................................................................................................................. 3 
2. Part names and functions........................................................................................ 4 
SPECIFICATIONS .......................................................................................................... 7 
1. Equipment specifications......................................................................................... 7 
2. Installation Environment........................................................................................... 7 
EQUIPMENT INSTALLATION........................................................................................ 8 
1. Equipment installation and connection.................................................................... 8 
MEASUREMENT............................................................................................................ 9 
1. Measurement Operation Flowchart......................................................................... 9 
2. Equipment needed to make measurements.......................................................... 10 
3. Preparing to make measurements......................................................................... 10 
4. Measurement..........................................................................................................11 
4.1. Setting the measuring conditions....................................................................11 
4.2. Setting the table conditions ............................................................................ 12 
4.3. Creating a calibration curve............................................................................ 13 
4.4. Measuring an unknown sample (collection tube)........................................... 16 
4.5. Interrupting the measurement........................................................................ 19 
4.6. Terminating the measurement........................................................................ 19 
MAINTENANCE............................................................................................................ 20 
1. Inspection items..................................................................................................... 20 

Instruction Manual MA-3000+RH-MA3 NIC-600-2208-04 
 
 
1.1. Daily inspections............................................................................................. 20 
1.2. Annual inspections ......................................................................................... 21 
2. Failures during measurement................................................................................ 22 
2.1. Reduced peak sensitivity................................................................................ 22 
2.2. No standard gas repeatability......................................................................... 23 
2.3. Incorrect blank values..................................................................................... 24 
3. Parts replacement.................................................................................................. 25 
3.1. Washing the coupling, joint, and gas scrubbing bottle................................... 25 
3.2. Replacing the RH2 heater mercury collection tube........................................ 26 
3.3. Regenerating collection tube 65L................................................................... 26 
3.4. Fuse replacement........................................................................................... 27 
3.5. Replacing the air pump (P2) tube................................................................... 28 
CONTACT..................................................................................................................... 30 
 

Instruction Manual MA-3000+RH-MA3 NIC-600-2208-04

1. Introduction

1.1. Safety precautions

1.1.1. Meaning of safety alert symbols

Warning

Indicates that incorrect handling could result in death or severe injury to

the operator.

Caution

Indicates that incorrect handling could pose a specific potential hazard

resulting in injury to the operator or damage to property.

1.1.2. Installation precautions

Warning

•Ensure to connect the earth wire in preventing electric shocks.

1.1.3. Precautions with maintenance

Warning

•Ensure to turn OFF the power supply before doing any maintenance or it could

result in an electric shock.

Caution

•Before doing maintenance work on the heater section ensure to turn off the

power switch and wait until the heater cools down to room temperature. Failure to

observe this could result in the operator suffering a burn.

•Exercise caution when handling any of the glass parts. Failure to observe this

could result in them being damaged.

•Do not turn on or off the power of the MA-3000 main unit while any buffer solution

is present. Failure to observe this could result in a backflow of the buffer solution,

thus disabling use of the collection tube.

Instruction Manual MA-3000+RH-MA3 NIC-600-2208-04

2. System Outline

The RH-MA3 is the collection tube heating furnace for use with the MA-3000, and an

optional unit for use in measuring any mercury collected by the MA-3000 in a 160L mercury

collection tube in LPG, natural gas or atmospheric air.

It is strongly recommended that this manual be carefully read before using the system in

thereby maximizing its potential performance.

This Instruction Manual covers the operation and maintenance of the RH-MA3.

Please read the MA-3000 Instruction Manual as well.

Instruction Manual MA-3000+RH-MA3 NIC-600-2208-04

2.1. Operation

The machine is fully controllable from the MA-3000. It introduces carrier gas into the

detection section via an optional pump located at the rear of the RH-MA3.

The machine heats the mercury collection tube with heater RH1 (H6) in thus liberating the

gas collected by the collector, and then removes any acidic gases via the gas scrubbing

bottle.Any excess moisture in the dehumidifying bottle is then removed, and any mercury

selectively re-collected and condensed in RH2 (H7). After collecting the mercury the

machine heats RH2 in thus liberating any mercury gas and introduces it into the detection

section before measuring its absorbance.

Cooling fan

Electronic cooler

T-joint with septum with collection tube 65L

Mercury collection tube

Carrier gas

Cooling fan

Heater

(RH2)

To MA-3000

Heater

(RH1)

Instruction Manual MA-3000+RH-MA3 NIC-600-2208-04

2.2. Part names and functions

Inside the RH-MA3 cover

No.

Name

Function

Remarks

T-joint

(with septum)

(Used to charge standard gas)

S1031-6103-11

Mercury collection

tube 160L

Tube used to collect mercury as the

measurement target

160 mm long

Heater (RH1)

Heater used to heat the mercury

collection tube (H6)

Union

FLW-30-6U-S

Gas scrubbing

bottle

Removal of acidic gases etc.

N-1062-0801-401

Roller clamp

IUC-56-655-02

Dehumidification

bottle

Water removal

N-1062-0801-401

Electronic cooler

Cools the gas scrubbing bottle and

dehumidifying bottle

Reducing elbow

FLW-30-6UE4-C

Collection tube 65L

Removes any mercury in the carrier

gas

S1016-3401-00





















Instruction Manual MA-3000+RH-MA3 NIC-600-2208-04

Rear of RH-MA3

No.

Name

Function

Remarks

Teflon pipe

(Φ4×Φ2)

Connects to the optional MA3

unit.

70 cm (standard)

AC INLET

Power supply port with power

switch

Includes built-in 4Afuse

MA-3000

connection terminal

Terminal for connection to

MA-3000

⑬

⑪

⑫

Instruction Manual MA-3000+RH-MA3 NIC-600-2208-04

Right side face of RH-MA3

No.

Name

Function

Remarks

Heater (RH2)

Heater used to heat the mercury

collection tube (H7)

Mercury collection

tube PE1

Recollects and condenses any mercury

L100mm

S1085-0820-00

Reducing union

Connection between collection tube and

Teflon tube

FLW-30-6RU4-S

⑭

⑮

⑯

Instruction Manual MA-3000+RH-MA3 NIC-600-2208-04

3. Specifications

3.1. Equipment specifications

Carrier gas:............................Indoor purified air

Sample:.................................160L mercury collection tube

Measurement range:.............0.01~1000ng

Dimensions and Weight:.......150W×280D×420mmH, 7kg

Source voltage:.....................Single-phase AC, 100 to 260V, 50/60Hz (3-pin socket)

Voltage source capacity:.......0.5kVA

Quality of power supply:........Should be free of any surges, harmonics, noise, etc.

3.2. Installation Environment

Room temperature:...............15 to 35°C

Vibration:...............................No vibrations strong enough to be felt by the human

body.

Dust and Fumes:...................Clean atmospheric environment free of fumes, dust, and

anything else that could affect the measurement. (No

smoking)

Installation space:..................1000W x 800D (mm) or larger with a rigid foundation and

capable of supporting a weight of about 60kg.

Other:.....................................Ensure to install the unit in a place out of direct sunlight

and not exposed to any air from air conditioners or

blowers.

Special notes:........................Ensure to not install the system in any place where

volatile halide reagents such as organic chlorine

solvents are handled. In addition, avoid installing it

anywhere those gases could be present.

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