Atec SH-641 User Manual

CAT.NO.E01111-K1209
Bench-Top Type Temperature
(& Humidity) Chamber
SHSU
Compact design for personal use, to network with your computer.
The Bench-top Type Temperature (& Humidity) Chamber Series features environmental
testing performance in a compact design. Available in 20L and 60L capacities, these models offer temperature ranges as low as −20, −40, or −60℃, and achieve excellent performance
rates, as well as communication interface compatibilities to collect test data.
Espec offers you the best in terms of advanced testing equipment.
1
* The viewing window is optional.
2
Characteristics
Stacked chambers (on stands)
Full variation to select from
With its 3 temperature range patterns (to −60, −40 or −20℃), and 2 volumes (20 and 60L) selection, the Bench-top chambers offer 10 models in temperature or temperature/ humidity configuration, to fulfill customers' needs.
Light and small structure
The chamber structure is optimized to save space while offer ing a wide test area (22.5L for 1st model). Its relatively light weight allows set up almost everywhere.
Full-size chamber performance
in a compact design
The SH-661 model achieves −60 to
150℃ temperature range and 30 to
95%rh for humidity in a small structure. It shows undoubtedly better performance than any other previous bench-top model.
Test area (60L model)
A refrigeration system that
reduces energy consumption by 55
Our exclusive refrigerator system with capacity control achieves 55% reduction in power consumption compared to our previous model. (SH/SU-221・241 models)
Easy wiring access
The chamber features free access to the test area. Cable ports are provided on both rig ht and lef t side to allow easy wiring of specimens for measurement or voltage application.
%
3
Characteristics
Layout arrangement thanks to
additional stand (option)
L and H stands are equipped with casters, and allow easy storage to optimize your testing zone. L stand is lower to fit under H stand and stack chambers. (L=Low, H=High)
* It is recommended to secure stands to the
floor with provided anchor bolts.
Easy water supply
Water is supplied from the front side ta nk (equipped with a level sensor). Auxiliary water tank circuit (option) is also available for extended operation time. (SH model)
Right-opening door (option)
The door opening can be reversed to fit your installation space.
Stands (option)
Viewing window (option)
An optional viewing window can be added to check specimens and wiring during testing. (W215×H215m m for 20L model, W215×H315mm for 60L model)
* Standard performance of the chamber will
not be met when adding this option.
Water supply tank
Right-opening door (option) Viewing window (option)
4
Characteristics
Example: Bench-top Type Temperature (& Humidity) Chamber connected
with the Ion Migration Evaluation System (sold separately)
Ion migration evaluation
The Bench-top chamber can be combined with ESPEC's Ion Migration Evaluation System (AMI) to ensure even more accurate evaluation results.
Paperless recorder (option)
Portable type, to record temperatures from various sources, such as test area temperature. Recording is possible on Compact Flash Card or via USB port.
Material labeling for
easy recycling
Plastic molded components are labeled and easily detachable to make recycling easier for future disposal of the equipment.
Cable port plug (Material marked)Paperless recorder Portable type (option)
5
Control operation
Key input setting
Easy sett ing of temperature a nd humidity values, but also upper and lower temperature (& humidity) limit alarms, by mechanical key input.
Program operation up to 9 steps
Besides constant setting, program operation is available by setting different patterns (9 step/ pattern) of heat up and pull down temperatures, to meet requirements of temperature characteristic test or temperature (& humidity) cycling. The instrumentation additionally offers various functions.
Flexible communication interface
An RS-485 connector is equipped as standard, but RS-232C or GP-IB is also available as option.
Remote control from your PC
Using "WEB Manager" (converter sold separately) and an intranet to connect the chamber and a computer makes it possible to edit profiles and perform monitoring from the computer.
Description of program function
Program function
Temp.
Step program
Temperature gradient program
Temp.
Termination program
*1 Sets a program repetition frequency between a range of 1 and 99. *2 Selects HOLD, CONST or OFF when a program is over.
2
1
Temp.
2
1
1.HOLD 2.CONST 3.OFF
Retains value of last step
END
Time Time Time
Pattern
3
4
5
6
3
4
6
5
END END
Operation at constant temp.
8
7
9
*1,2
Time
7
8
9
*1,2
Time
Chamber OFF
Temperature (& humidity) program indicator controller
Setting Mechanical key input
Display 7 segment LED display
Operating mode Program operation, constant operation
Control PID control
Setting and indication
Setting and indication ranges
Indication accuracy *
Program memory capacity
Interface RS-485
Auxiliary functions
Battery Lithium battery ×1
* At ambient temperature +23ºC
Temp. : 0.1ºC Humid. : 1%rh (SH only) Time : 1 minute
Temp. : −25 to +155ºC (SH-221, SU-221)
−45 to +155º C (SH - 241/6 41, SU -241/ 641)
−65 to +155ºC (SH-261/661, SU-261/661) Humid. : 0 to 100%rh (SH only) Time : 0 to 99 hours 59 minutes, 100 to 999 hours
Temp. : 0.5ºC (Typ.) Humid. : ±2%rh (Typ.) (SH only) Time : within 30 sec. per month
9 steps per pattern (1 to 99 times)
Input-burnout detection Upper and lower temp. (& humid.) limit alarm Self-diagnostic (watchdog timer) Alarm indication Power cut protection Refrigerator capacity automatic control
6
SH
Model SH−221 SH−241
SH−261
SH−641
SH−661
System Balanced Temperature & Humidity Control system (BTHC system)
20 to +150
Temp. range
Tem p. fl uctuation
*1
Temp. gradient / Temp. variation in space
Tem p.
Heat up rate
rate of
Pull down rate
change
Heat up time
Temp. performance
Temp. extreme achievement time Pull down time
Lowest attainable temp.
*1
Humid. range 30 to 95%rh (Refer to diagram on page 9)
Humid.
Humid. fl uctuation
performance
(−4 to +302℉)
0.3℃ (−20 to +100℃)
±
0.5℃ (+100.1 to +150℃)
±
2.5℃ (−20 to +100℃)
4.0℃ (+100.1 to +150℃)
3.2℃ /min. 3.2℃ /min. 3.2℃ /min. 2.9℃ /min. 2.9℃ /min.
2.1℃ /min. 2.1℃ /min. 2.1℃ /min. 1.7℃ /min. 1.7℃ /min.
From −20 to +150
within 55 min.
From +20 to −20
within 20 min.
−20℃−
40 to +150
(−40 to +302℉)
0.3℃ (−40 to +100℃)
±
0.5℃ (+100.1 to +150℃)
±
2.5℃ (−40 to +100℃)
4.0℃ (+100.1 to +150℃)
From −40 to +150
within 60 min.
From +20 to −40
within 50 min.
40
℃−
60 to +150
(−76 to +302℉)
0.3℃ (−60 to +100℃)
±
0.5℃ (+100.1 to +150℃)
±
2.5℃ (−60 to +100℃)
4.0℃ (+100.1 to +150℃)
From −60 to +150
within 70 min.
From +20 to −60
within 70 min.
60
℃−
3.0%rh
±
40 to +150
(−40 to +302℉)
0.3℃ (−40 to +100℃)
±
0.5℃ (+100.1 to +150℃)
±
2.5℃ (−40 to +100℃)
4.0℃ (+100.1 to +150℃)
From −40 to +150
within 70 min.
From +20 to −40
within 60 min.
40
℃−
60 to +150
(−76 to +302℉)
0.3℃ (−60 to +100℃)
±
0.5℃ (+100.1 to +150℃)
±
2.5℃ (−60 to +100℃)
4.0℃ (+100.1 to +150℃)
From −60 to +150
within 80 min.
From +20 to −60
within 90 min.
60
Heater Nichrome strip wire heater
Humidifi er Sheathed heater
System
Mechanical single-stage refrigeration system
Mechanical cascade refrigeration system
Cooler Plate fi n cooler
Refrigerator Hermetically sealed compressor, Air-cooled condenser, Expansion mechanism: Capillary tube system
Construction
Refrigerator capacity
Refrigeration unit
Refrigerant R404A R23, R404A
400W [Unit 1: 400W ×1, Unit 2: 400W ×1]
Capacity 22.5 L 64 L
Chamber total load resistance
Inside dimensions mm (inch)
Outside dimensions mm (inch)
*2
*2
W300×H300×D250
(W11.81×H11.81×D9.84)
W440×H630×D695
(W17.32×H24.80×D27.36)
20 kg
W440×H690×D785
(W17.32×H27.18×D30.91)
W400×H400×D400
(W15.75×H15.75×D15.75)
W540×H730×D920
(W21.26×H28.74×D36.22)
Weight 83 kg (78 for 100V type) 105 kg 130 kg
Allowable ambient conditions
*3
Utility requirements
Power supply
Noise level
100V AC 1φ50/60Hz
115V AC 1φ60Hz
200V AC 1φ50/60Hz
220V AC 1φ50/60Hz
220V AC 1φ60Hz
230V AC 1φ50Hz
*5
*4
*4
13.5 A 15.0 A 18.0 A
13.0 A 14.5 A
8.0 A 9.5 A 10.0 A
8.0 A 9.5 A 10.0 A
7.5 A 9.5 A 10.0 A
55 dB 59 dB 61 dB
Exhaust heat quantity 3500 kJ/h (836 kcal/h)
*1 The performance values are based on IEC 60068 -3-5:2001, JTM K07:2007 for the temperature chamber, IEC 60068-3-6:2001, JTM K09:20 09 for the humidity
chamber. Performance fi gures are given for a +23℃ ambient temperature, 65% rh, rated power s upply and no specimens inside the test area. However, the lowest attainable temperature is given for a max. ambient temp erature of +30℃. Heat-up time is the achieved time from lowest temperature to highes t temperature within
temperature range. *2 Excluding protrusions. *3 At ambient temperature +23℃. For SH- 641/661, make sure to che ck the power capab ility of your installation beforehand. *4 Compliance with CE Marking. *5 Measurements are to b e taken in an a nechoic room at a height of 1.2m from the fl oor and a distance of 1m from the chamber front panel (ISO 1996-1:2003 _ A-weighte d sound pressure l evel)
5 to +35℃ (+41 to +95
4000 kJ/h (955 kcal/h)
℉)
10.5 A
5040 kJ/h (1204 kcal/h)
7
SU
Model SU−221 SU−241
SU−261
SU−641
SU−661
System Balanced Temperature Control system (BTC system)
Temp. range
Tem p. fl uctuation
*1
Temp. gradient / Temp. variation in space
Tem p.
Heat up rate 3.2℃ /min. 3.2℃ /min. 3.2℃ /min. 2.9℃ /min. 2.9℃ /min.
rate of
Pull down rate
change
Heat up time
Temp. performance
Temp. extreme achievement time Pull down time
Lowest attainable temp.
20 to +150
(−4 to +302℉)
0.3℃ (−20 to +100℃)
±
0.5℃ (+100.1 to +150℃)
±
2.5℃ (−20 to +100℃)
4.0℃ (+100.1 to +150℃)
2.1℃ /min. 2.1℃ /min. 2.1℃ /min. 1.7℃ /min. 1.7℃ /min.
From −20 to +150
within 55 min.
From +20 to −20
within 20 min.
−20℃−
40 to +150
(−40 to +302℉)
0.3℃ (−40 to +100℃)
±
0.5℃ (+100.1 to +150℃)
±
2.5℃ (−40 to +100℃)
4.0℃ (+100.1 to +150℃)
From −40 to +150
within 60 min.
From +20 to −40
within 50 min.
40
℃−
60 to +150
(−76 to +302℉)
0.3℃ (−60 to +100℃)
±
0.5℃ (+100.1 to +150℃)
±
2.5℃ (−60 to +100℃)
4.0℃ (+100.1 to +150℃)
From −60 to +150
within 70 min.
From +20 to −60
within 70 min.
60
40 to +150
(−40 to +302℉)
0.3℃ (−40 to +100℃)
±
0.5℃ (+100.1 to +150℃)
±
2.5℃ (−40 to +100℃)
4.0℃ (+100.1 to +150℃)
From −40 to +150
within 70 min.
From +20 to −40
within 60 min.
℃−
40
℃−
60 to +150
(−76 to +302℉)
0.3℃ (−60 to +100℃)
±
0.5℃ (+100.1 to +150℃)
±
2.5℃ (−60 to +100℃)
4.0℃ (+100.1 to +150℃)
From −60 to +150
within 80 min.
From +20 to−60
within 90 min.
60
Heater Nichrome strip wire heater
System
Mechanical single-stage refrigeration system
Mechanical cascade refrigeration system
Cooler Plate fi n cooler
Refrigerator Hermetically sealed compressor, Air-cooled condenser, Expansion mechanism: Capillary tube system
Construction
Refrigerator capacity
Refrigeration unit
Refrigerant R404A R23, R404A
400W [Unit 1: 400W ×1, unit 2: 400W ×1]
Capacity 22.5 L 64 L
Chamber total load resistance
Inside dimensions mm (inch)
Outside dimensions mm (inch)
*2
*2
W300×H300×D250
(W11.81×H11.81×D9.84)
W440×H560×D695
(W17.32×H24.8×D27.36)
20 kg
W440×H620×D785
(W17.32×H24.41×D30.91)
W400×H400×D400
(W15.75×H15.75×D15.75)
W540×H660×D920
(W21.26×H25.98×D36.22)
Weight 78 kg (73 for 100V type) 100 kg 123 kg
Allowable ambient conditions
100V AC 1φ50/60Hz
*3
115V AC 1φ60Hz
200V AC 1φ50/60Hz
220V AC 1φ50/60Hz
220V AC 1φ60Hz
Utility requirements
Power supply
230V AC 1φ50Hz
Noise level
*4
*4
*5
11.0 A 15.0 A 18.0 A
10.5 A 14.5 A
7.0 A 9.5 A 10.0 A
7.0 A 9.5 A 10.0 A
6.5 A 9.5 A 10.0 A
55 dB 59 dB 61 dB
Exhaust heat quantity 3500 kJ/h (836 kcal/h)
*1 The per formance values are based on IEC 600 68-3-5:20 01, JTM K07:2007 for the temperature chamber. Performance fi gures are given for a +23℃ ambient temperature,
65%rh, rate d power sup ply and no specimens inside the test area. However, the lowest at tainable temperature is given for a ma x. ambient temperature of +30℃.
Heat-up time is the achieved time from lowest temperature to highest temperature within temperature range. *2 Excluding protrusions. *3 At ambient temperature +23℃. For SU-641/661, make sure to chec k the power capability of your installation beforehand. *4 Compliance with CE Marking. *5 Measurements are to b e taken in an a nechoic room at a height of 1.2m from the fl oor and a distance of 1m from the chamber front panel (ISO 1996-1:2003 _ A-weighte d sound pressure l evel)
5 to +35℃ (+41 to +95
4000 kJ/h (955 kcal/h)
℉)
10.5 A
5040 kJ/h (1204 kcal/h)
8
TEMPERATURE & HUMIDITY CONTROL RANGE (SH)
100
90 80 70 60 50 40 30 20 10
0
10 20 30 40 50 60 70 80 90 100
85
15
Temperature (℃)
95
rh
Relative Humidity (
%
rh)
* At ambient temperature +23℃
MODEL
S - 1
SAFETY DEVICES
Leakage breaker
Thermal fuse
Boil dry protector (SH only)
Control circuit short-circuit protective fuse
Overheat and overcool protector
Temperature switch for air circulator
Specimen power supply control terminals
Refrigerator overload relay
Refrigerator high pressure switch
Chamber door switch
Upper and lower temperature (& humidity) limit alarms
(Built-into temperature [humidity] controller)
Burn-out detection circuit
(Built-into temperature [humidity] controller)
Watchdog timer
(Built-into temperature [humidity] controller)
Refrigerator automatic delay circuit
(Built-into temperature [humidity] controller)
9
Temperature range 2: −20 to +150
4: −40 to +150 6: −60 to +150
Capacity 2: 22.5L 6: 64.0L
H: Temperature & humidity chamber U: Temperature chamber
FITTINGS
Temperature-Humidity recorder terminal
Specimen power supply control terminal
External alarm terminal
External output terminal
Cable port
Power cable
Drain hose
Water supply tank (SH only)
Humidifying tray drain plug (SH only)
Drain socket for water sensor box (SH only)
ACCESSORIES
Shelf 1
Capacity

SH/ SU-221, 241, 261 : 500g
 
SH/ SU-641, 661 : 5kg
 
Max. number of shelves
℃ ℃ ℃

SH/ SU-221, 241, 261 : 5 (Shelf pitch 35mm)
 
SH/ SU-641, 661 : 5 (Shelf pitch 50mm)
 
Connector
2P for connecting terminal for temp. & humid. recorder SH:2/ SU:1

6P for connecting signal terminal 1

Cable port plug (φ25mm) 2
Cartridge fuse (Class A, 250V, 3A) 1
Socket adapter (100V, 115V on 20L type only) 1
Wet-bulb wick (Box of 24pcs) 1 (SH only)
Humidifying tray drain hose 2m 1 (SH only)
Drain hose for water sensor box 0.3m 1 (SH only)
User's manual (CD-R, booklet) 1 set
DIMENSIONS
unit:mm (inch)
SH-641661
SH-221241
SH-261
540 (21.3) 920 (36.2)
400 (15.7)
400 (15.7)
400 (15.7)
10 (0.4)
70
(2.8)
30
300 (11.8)
440 (17.3)
695 (27.4)
35 (1.4)
30
30
250 (9.8)
250 (9.8)
785 (30.9)
250 (9.8)
35 (1.4)
300 (11.8)
440 (17.3)
250 (9.8)
300 (11.8)
400 (15.7)
300 (11.8)
630 (24.8)
70
(2.8)
610 (24.0)
730 (28.7)
90
(3.5)
510 (20.0)
90
(3.5)
150
(5.9) 510 (20.0)
70
(2.8)
690 (27.2)
440 (17.3)
70
(2.8)
440 (17.3)
70
(2.8)
540 (21.3)
70
(2.8)
10
DIMENSIONS
unit:mm (inch)
300 (11.8)
440 (17.3)
695 (25.7)
35 (1.4)
530 (20.8)
560 (22.0)
30
30
250 (9.8)
440 (17.3)
300 (11.8)
300 (11.8)
70
(2.8)
70
(2.8)
70
(2.8)
70
(2.8)
70
(2.8)
70
(2.8)
300 (11.8)
SU-221・241
SU-261
440 (17.3)
785 (30.9)
590 (23.2)
620 (24.4)
250 (9.8)
436.5 (17.1)
250 (9.8)
250 (9.8)
35(1.4)
540 (21.2)
920 (36.2)
630 (24.8)
660 (25.9)
400 (15.7)
536.5 (21.1)
400 (15.7)
400 (15.7)
400 (15.7)
10 (0.4)
SU-641・661
30
11
OPTIONS
Paperless recorder (Portable type)
Records temperat ure of each section such as the tempe rat u re in side t he chamber. Data saving cycle: 5 sec Portable type External recording media: CF memory card (256MB) USB port Language support: ENG, JPN
[Temperature type] Temperature range: −100 to +200
Number of inputs (Initial setting): Temperature 1
(5 more channels can be turned ON)
[Temperature and humidity type] Temperature range: − 50 to +150
100 to +150
Humidity range: 0 to 100%rh Number of inputs (Initial setting): Temperature 1 / Humidity 1
(4 more channels can be turned ON)
Temperature recorder (Portable type)
[SRJ25] Temperature range: −100 to +200
Effective recording chart width: 100m m Number of inputs: Temperature 6
Temperature & humidity recorder (Portable type)
Effective recording chart width: 100m m Number of inputs: Temperature 5 Humidity 1
[SRJ14] Temperature range: −100 to +150
Humidity range: 0 to 100%rh (for SH)
[SRJ12] Temperature range: −50 to +150℃/ Humidity range: 0 to 100%rh (for SH)
Viewing window
SH/SU-221, 241, 261 W215×H215mm SH/SU-641, 661 W215×H315mm
When equipped with a viewing wi ndow, chamber perfor m ance are as follow: Temperature uniformity : ±1.0℃ (−20 to +10 0℃) ±1.5℃ (−100.1 to +150℃) Humidity uniformity : ±5.0%rh Temp. heat up rate: Std rate +10 min. (or less) Temp. pull down rate: Std rate +10 min. (or less) (+20 to −35℃) Std rate +30 min. (or less) (+20 to −60℃)
Paperless recorder Portable type
Wet-bulb temperature detecting terminal
For the test area wet-bulb temperature detection. A thermocouple type T (Copp er/Copp er-Nickel) or of equivalent thermoelectric capacity is used. Connector included.
* Not available for SU.
Thermocouple
Attached to specimens to measure specimen temperature.
2m
4m
6m
* Thermocouple t ype T without ball (Copper / Copper-Nickel) * Same as accessor y items
W215×H215mm
Inner door
Glass door provided inside the chamber, to obser ve the cond itions of the specimens.
* A wiper is included for SH models. * This option is not compatible with a viewi ng
window or right-opening door.
* Used for observation of the specimens i nside
the chamber.
SU model
12
OPTIONS
Right-opening door
Door can be changed for a reverse one (hinges on the right, handle on the left)
* This option is not compatible with inner glass
door option.
Additional cable port
Provided in addition / replacement of the standard cable ports.
25mm diameter
・
50mm diameter
・
100m m dia mete r
・
Flat cable port (W100×H25mm)
・
* Each cable port is equipped with a silicone
sponge rubber plug.
* Basic specification of the chamber may not be
met when equipped w ith a cable port.
Used to automatically refill the standard tank with the auxiliary water tank. Required water quality: Conductivity 0.1 to 10μS/cm Water supply pressure:
4.9 to 19.6KPa (Gauge)
Auxiliary water tank (SH)
Used to refill the standard tank.
Tray for auxiliary tank (SH)
Prevents wat er leak age duri ng standard tank refill process.
Shelf
Equivalent to standard accessory:
SH/SU-221, 241, 261
Effective size: W200×D150 mm Load resistance: 500gr.
SH/SU-641, 661
Effective size: W300×D300mm Load resistance: 5kg.
Specimen basket
StandAuxiliary water tank circuit (SH)
Enhances the mobility of the chamber, and faci litat es load / u nload of specimens. L stand can f it u nder the H stand to save space.
* Be sure to secure the st and to t he floor with
the provided anchor bolts.
L stand
・
SH/SU-221, 241: W4 4 0×H450×D750mm (25kg) SH/SU-261: W4 4 0×H390×D750mm (21.5kg) SH/SU-641, 661: W540×H350×D860mm (28kg)
H stand
・
SH/SU-221, 241, 261: W630×H1140×D815mm (36kg) SH/SU-641, 661: W730×H1140×D925mm (40kg)
Equivalent to standard accessory. Material: Stainless steel (5 mesh)
25mm diameter type flat type
Cable port rubber plug
Prevents a ir leakage f rom the cable port.
Some photographs listed in this catalog contain Japanese display.
This product can be customized for your needs. For further information, please contact us.
13
L stand
Two chambers stacked
(L and H stands)
OPTIONS
Safety precautions
●
Do not use specimens which are explosive or inflammable, or which contain such
substances. To do so could be hazardous, as this may lead to fire or explosion.
●
Do not place corrosive materials in the chamber. If corrosive substances or liquid is used, the life of the unit may be significantly shortened specifically because of the corrosion of stainless steel, resin and silicone materials.
●
Do not place life forms or substances that exceed allowable heat generation.
●
Be sure to read the user's manual before operation.
Interface
GPIB
RS-232C
* Select one, instead of standard RS-485
Communication cables
RS-485 5m/ 10m/ 30m
GPIB 2m/ 4m
RS-232C 1.5m/ 3m/ 6m
14
TS9B24C03 (The cont ents of thi s cat alog is as of September, 2012.)
Specifications are subject to change without notice due to design improvements.
Corporate names and trade names mentioned in this catalog are trademarks or registered trademarks.
ESPEC CORP.
Environmental Management System Assessed and Registered
ESPEC CORP. has been assessed by and registered in the Quality Management System based on the International Standard ISO 9001:2008 (JIS Q 9001:2008) through the Japanese Standards Association (JSA).
Registration : ESPEC CORP.
(Overseas subsidiaries not included)
Quality Management System Assessed and Registered
http://www.espec.co.jp/english
Head Office
3-5-6, Tenjinbashi, Kita-ku, Osaka 530-8550, Japan Tel : 81-6-6358-4741 Fax : 81-6-6358-5500
ESPEC NORTH AMERICA, INC.
Tel : 1-616-896-6100 Fax : 1-616-896-6150
ESPEC EUROPE GmbH
Tel : 49-89-1893-9630 Fax : 49-89-1893-96379
ESPEC (CHINA) LIMITED
Tel : 852-2620-0830 Fax : 852-2620-0788
ESPEC ENVIRONMENTAL EQUIPMENT (SHANGHAI) CO., LTD.
Head Office
Tel : 86-21-51036677 Fax: 86-21-63372237
BEIJING Branch
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